Ipomoea Atlas
Jun
Monday, October 19, 2015
This is a collection of documents and data about all the species in Ipomoea.
Last update time:
## [1] "Tue May 31 16:54:29 2016"In NCBI, Ipomoea contains only 146 species or subspecies or hybrid species.
“Tropicos was originally created for internal research but has since been made available to the world’s scientific community. All of the nomenclatural, bibliographic, and specimen data accumulated in MBG’s (Missouri Botanical Garden) electronic databases during the past 25 years are publicly available here. This system has over 1.2 million scientific names and 4.0 million specimen records.”
In Tropicos, Ipomoea contains 1866 records.
In JSTOR, Ipomoea contains 7334 records including some amazing ancient drawings.
!Ipomoea L.
Blue Man Bolivia Lady
Anonymous
Some of them are already resoloved by J.R.I.Wood & Scotland in their monograph “Ipomoea (Convolvulaceae) in Bolivia”, like Ipomoea paradae below.
Key: Leaves white-tomentose beneath
Ipomoea sect. Acmostemon (Pilg.) Verdc.
Ipomoea ser. Anisomerae (House) D.F. Austin
Ipomoea sect. Batatas (Choisy) Griseb.
Ipomoea sect. Pes-caprae Griseb.
Ipomoea abutiloides (Kunth) G. Don
Key: Sepals glabrous or near-glabrous
Ipomoea abutiloides (Kunth) G. Don (1838: 273).
Convolvulus abutiloides Kunth (1819: 106). Type: Ecuador, Guayaquil, Bonpland s.n. (holotype P00670760!).
Turbina abutiloides (Kunth) O’Donell (1950c: 505)
Liana climbing high over shrubs to 7 m, stems whitetomentose, especially when young, roots tuberous. Leaves petiolate, 3 – 10 × 3 – 11 cm, broadly ovate, base truncate to subcordate, apex retuse, rounded or obtuse, adaxially pubescent, abaxially grey-tomentose; petioles (1–) 3 – 6 (– 10) cm, pubescent to tomentose. Inflorescence of axillary and terminal cymes, the later compound and often paniculate or racemose in form, sometimes distinctly leafy; peduncles 2 – 11 cm, tomentose; bracteoles 2 – 9 mm, linear, tomentose, soon caducuous; short (c. 5 mm), secondary and tertiary peduncles often present; pedicels 5 – 25 mm, tomentose; calyx narrow and ± cylindrical, sepals subequal, 10 – 14 × 4 – 7 mm, oblong-obovate, obtuse to rounded, drying brown, glabrous or nearly so, inner c. 2 mm longer than outer, the margins broad and scarious; corolla 5 – 7 cm, funnel-shaped, pink, pubescent in bud, glabrescent, limb 4 – 5 cm, weakly lobed. Capsule glabrous, ovoid, 14 – 17 × 6 – 7 mm; seeds reported as usually solitary, 9 – 10 mm long, minutely tomentellous.
Ipomoea acanthocarpa
Key: Pedicels very short, < 5 mm long; seeds with abundant long hairs (lowland species)
Ipomoea acanthocarpa (Choisy) Aschers. & Schweinf. (Ascherson & Schweinfurth 1867: 277).
Calonyction acanthocarpum Choisy (1845: 346). Type: Sudan, Kordofan, T. Kotschy 269 (isotype K!).
Ipomoea piurensis O’Donell (1953: 382), synon. nov. Type: Peru, O. Haught 142 (holotype US!).
Glabrous twining herb. Leaves petiolate, 2 – 11 × 1.5 – 8 cm, ovate-deltoid, shortly and often abruptly acuminate or acute, cordate, auricles rounded to acute, often with a distinct tooth and sometimes shallowly bilobed, abaxially with prominent venation, petioles 1 – 8 cm. Inflorescence of few-flowered, somewhat congested, pedunculate cymes; peduncle 1 – 6 cm, often stout and somewhat swollen upwards, sometimes warty, bracteoles 2 – 3 mm, scale-like, caducous; pedicels 2 – 5 mm, sometimes warty; sepals slightly unequal, 5 – 10 × 3.5 – 7 mm, the margins white, outer ovate, acute to mucronate, usually conspicuously warty, inner obtuse and mucronate, smooth, slightly larger; corolla 2 – 3 cm, funnel-shaped, pink or white, glabrous, limb c. 2.5 cm diam., the midpetaline bands terminating in mucros. Capsule 9 – 10 mm, subglobose, with prominent persistent style, glabrous; seeds 5.5 mm long, grey, long-pilose.
!Ipomoea aculeata Blume
*Ipomoea aculeata (L.) Kuntze
Ipomoea aculeata var. mollissima (Zoll.) Hallier f. ex Ooststr.
Ipomoea acuminata (Vahl) Roem. & Schult.
Ipomoea acutisepala O’Donell
Ipomoea aegyptia L.
Ipomoea alatipes Hook. f.
!Ipomoea alba L.
Key: Corolla white, narrowly cylindrical wth spreading limb, stamens exserted; outer sepals 15 – 25 mm long including awn
Ipomoea alba L. (Linnaeus 1753: 161). Type: India, Rheede, Hort Ind. Malabar 11: 103. t. 50 (1692), designated by Verdcourt in Hubbard & Milne-Redhead (1963: 130).
I. bona-nox L. (Linnaeus 1762: 228), nom. illeg., superfluous name for I. alba L.
Vigorous scrambling or trailing plant, stems to 10 m, glabrous, sometimes armed with soft spines. Leaves petiolate, 5 – 15 × 4 – 14 cm, ovate, sometimes lobed to about one third, acuminate to a fine hair point, cordate at the base, auricles sometimes with broad teeth; petioles 3 – 18 cm. Inflorescence of 1 – 3-flowered, pedunculate, axillary cymes; peduncles 2 – 9 (– 20) cm, stout; bracteoles caducous, not seen; pedicels 5 – 15 mm, swollen below flower; sepals unequal, outer sepals 15 – 25 × 4 – 6 mm, lanceolate with a long awn 5 – 12 mm in length, green with white margins inner sepals 12 – 20 mm including a 2 – 5mmlong awn, ovate, whitish with green midrib; corolla with a cylindrical tube 5 – 12 cm long and a spreading, white limb 4 – 5 cm in diam., glabrous. Capsule ovoid, c. 3 cm long, glabrous; seeds 11 – 13 mm long, glabrous.
Ipomoea albivenia Sweet
Ipomoea alexandrae D.F. Austin
Ipomoea amnicola Morong
Key: Corolla 2 – 3 cm long; inner sepals 5 – 5.5 mm long
Ipomoea amnicola Morong in Morong & Britton (1892: 170). Type: Paraguay, banks of the Pilcomayo, T. Morong 974 (holotype NY!, isotype R!).
Somewhat succulent twining perennial, completely glabrous in all parts. Leaves petiolate, 2 – 8 (– 12) × 2 – 8 (– 10) cm, ovate, sometimes broadly so, distinctly narrowed to an acuminate apex, base cordate with rounded auricles, abaxially slightly glaucous, petioles 1 – 10 cm. Inflorescence of rather dense, many-flowered, pedunculate simple or compound cymes; peduncles 1 – 5 cm; bracteoles 1 – 2 mm, ovate, caducous; secondary peduncles 5 – 15 mm; pedicels 0.8 – 2 cm; sepals slightly unequal, coriaceous, glabrous, outer 4 – 5 mm long, elliptic, concave, obtuse and shortly mucronate, inner 5 – 5.5 mm long, obovate, rounded, with broad scarious margins; corolla 2 – 3 cm, pale lilac with dark centre, glabrous, funnel-shaped, the limb 2.5 – 3 cm diam., unlobed. Capsule ovoid, 9 – 12 × 6 mm, glabrous, seeds reddish brown, tomentose.
Ipomoea ampullacea Fernald
Ipomoea androyensis Deroin
Ipomoea anisomeres B.L. Rob. & Bartlett
Ipomoea anisomeres var. sagittiformis L.O. Williams
Ipomoea aprica House
Key: Leaves linear to very narrowly oblong
Ipomoea aprica House (1908: 243). Ipomoea angustifolia Choisy (1845: 355), non I. angustifolia Jacq. (Jacquin 1788). Type: Pohl in Herb. Mart. (holotype M-0184918; isotype K000612793).
Erect undershrub from a xylopodium to c. 75 cm, stems strigose, woody, not usually branched. Leaves sessile, rather numerous, 1.5 – 12 × 0.2 – 0.5 cm, linear to narrowly oblong, base cuneate, apex acute and mucronate, adpressed pubescent. Inflorescence terminal, usually short (c. 5 cm long) with a distinct rhachis, somewhat compact; flowers solitary from the upper leaf axils or in very shortly pedunculate cymes; peduncles 0 – 5 cm, pubescent; bracteoles c. 2 mm, lanceolate, fugacious; pedicels 3 – 10 mm, pubescence more spreading than on peduncles; sepals subequal, 4 – 6 mm (accrescent to 7 mm in fruit), ovate to suborbicular, obtuse to subacute, tomentose, the inner c. 1 mm longer, rounded with wide, glabrous, scarious margins; corolla 4 – 4.5 cm, funnel-shaped, pink, adpressed pilose, limb 2.5 – 3 cm diam. Capsule ovoid, 5 – 7 mm long, glabrous, shortly rostrate; seeds not seen.
Ipomoea aquatica Forssk.
Ipomoea arachnosperma Welw.
Ipomoea arborescens (Humb. & Bonpl. ex Willd.) G. Don
Ipomoea arborescens var. glabrata Gentry
Ipomoea argentaurata Hallier f.
Ipomoea argentea Meisn.
Key: Leaves silvery-tomentose or sericeous, not conspicuously imbricate, nor decreasing in size upwards; corolla limb lobed
Ipomoea argentea Meisn. (Meisner 1869: 247). Types: Brazil, Goyas et Pianhy, G. Gardner 3356 (lectotype BR 0000005837519!, designated here, isolectotype K!).
Batatas villosa Choisy (1845: 337). Types: Brazil, Sao Paulo, Ytu, Martius 609 (syntype M).
Ipomoea villosa (Choisy) Meisn. (Meisner 1869: 244), non I. villosa Ruiz & Pavon (1799).
Ipomoea stachyoides Meisn. (Meisner 1869: 240). Type: Brazil, Goiás, Burchell 6586 (holotype BR!, isotypes K!, P!).
Erect perennial, stem stout and somewhat woody, often simple, white-tomentose, 0.3 – 1 m high. Leaves subsessile, 2.5 – 10 (– 14) × 2 – 3.5 (– 5.5) cm, broadly oblong to oblong-elliptic, acute and sometimes mucronate, cuneate to rounded at base, densely sericeous or tomentose on both surfaces, upper surface greenish, lower surface grey; petioles 0 – 5 mm. Inflorescence terminal, formed of sessile or shortly pedunculate compact cymes from the upper leaf axils, cymes commonly single-flowered but sometimes with 2 – 10 flowers; peduncles 0 – 2.5 cm, tomentose; bracteoles linear-lanceolate to ovate, up to 10 × 5 mm, hirsute, somewhat persistent; pedicels 1 – 3 mm; sepals subequal, 7 – 9 mm, elliptic, obtuse, coriaceous, concave, brown when dry, the outer villous but glabrescent, inner glabrous; corolla 5 – 6 cm, funnelshaped, pink, glabrous, limb c. 4 cm diam., distinctly lobed. Capsule glabrous, ellipsoid, 8 × 6 mm, very shortly rostrate; seeds c. 3 mm, long-pilose.
Ipomoea argentifolia A. Rich. ex Sagra
Ipomoea argentina N.E. Br.
Ipomoea argentinica Peter
Key: Twining herb; sepals 9 – 10 mm long
Ipomoea argentinica Peter (1891: 30). Type: Argentina, Salta, pasaje del Río Juramento, Lorentz & Hieronymus 285 (lectotype GOET 005548!, designated by O’Donell (1959b: 110), isolectotype US!).
Twining or, less commonly, trailing perennial, roots with small tubers, stems densely pubescent. Leaves petiolate, mostly 2 – 8 × 3 – 10 cm, broadly ovate to suborbicular, shallowly cordate to ± truncate with rounded auricles, apex acute and apiculate, adaxially green and appressed pilose, abaxially grey, tomentose with long, appressed hairs; petioles 1 – 8 cm. Inflorescence of dense pedunculate cymes; peduncles 4 – 7 (–11) cm, usually grey-tomentellous; bracteoles 1.2 – 2 × 0.1 – 0.3 cm long, linear-lanceolate, longacuminate, grey-tomentose, persistent; secondary peduncles 0.3 – 4 cm; pedicels 0 – 10 mm, often very short, tomentellous; sepals subequal, 9 – 10 × 4 – 5 mm, broadly lanceolate, acute to acuminate, silvery-sericeous, the inner ovate with scarious, glabrous margins; corolla 5 – 7 cm, pale pink, adpressed-pilose, funnelshaped, limb 3 – 4 cm diam., undulate to very shallowly lobed. Capsule ovoid, 8 – 9 × 7 mm, glabrous; seeds 6 – 7 mm long, long-pilose.
Ipomoea argillicola R.W. Johnson
Ipomoea argyreia Meisn.
Ipomoea aristolochiifolia G. Don
Key: Peduncle usually passing through sinus of leaf base; sepals obtuse, verrucose, occasionally smooth
Ipomoea aristolochiifolia G. Don (1838: 277). Type: Venezuela, Humboldt & Bonpland (holotype P 00670751!).
Ipomoea oocarpa Benth. (Bentham 1844 [publ. 1845]: 136). Type: Ecuador, Guayaquil, Sinclair s.n. (holotype K!).
Ipomoea tuerckheimii Vatke ex Donn. Sm. (Donnell Smith 1905: 8). Type: Guatemala, von Tuerckheim 386 (isotypes GH!, P, US).
Slender twining annual herb, stems shortly pilose or glabrous. Leaves petiolate, 1.5 – 6 × 1 – 3.5 cm, ovatedeltoid, narrowed to an acuminate and mucronate apex, base very narrowly cordate often with overlapping rounded auricles, margin often with a few teeth, ciliolate, adaxially glabrous, abaxially paler, the veins puberulent; petioles 0.5 – 5.5 cm, glabrous to sparsely pilose. Inflorescence of 1 – 3(-6)-flowered, axillary, pedunculate cymes; peduncles 2.5 – 6 cm, puberulent, very slender, often curved, arising through the sinus of the leaf base; bracteoles 1 – 1.5 mm, triangular-lanceolate; pedicels mostly 5 – 10 mm, very slender, glabrous; calyx lanceolate in outline, sepals subequal, often warted on exterior near base but otherwise glabrous, 3 – 5 × 1.5 – 2 mm, oblonglanceolate, obtuse, mucronate, dark green with pale scarious margin; corolla 1.5 – 2.5 cm, campanulate, tube white, limb blue (drying pink), very shallowly lobed, 1.2 – 1.8 cm diam. Capsule glabrous, ovoid, the style often persistent as a rostrate tip, seeds puberulent.
Ipomoea armentalis L.O. Williams
Ipomoea asarifolia (Desr.) Roem. & Schult.
Ipomoea assumptionis Morong
Ipomoea aurantiaca L.O. Williams
Ipomoea aurifolia Dammer
*Ipomoea avicola D.F. Austin
Ipomoea bahiensis Willd. ex Roem. & Schult.
Ipomoea bahiensis var. sagittifolia Meisn.
Key: Outer sepals with a dorsal tooth-like appendage
Ipomoea bahiensis Willd. ex Roem. & Schultz (Roemer & Schultes 1819: 769). Type: Brazil, T. Hoffmannsegg s.n. (holotype B-W 03753-010).
Ipomoea salzmannii Choisy (1838: 59). Type: Salzmann & Blanchet 2683 (isotype M-0184904).
Trailing or climbing perennial herb to 1.5 cm, stems glabrous. Leaves petiolate, 3 – 8 × 0.8 – 5.5 cm, ovatedeltoid, acuminate and mucronate, base cordate with rounded to acute auricles, glabrous or puberulent, abaxially pale green; petioles 0.5 – 2 cm. Inflorescence of few-flowered, dense, pedunculate axillary cymes; peduncles 0.5 – 4 (– 12) cm long, often very short, puberulent or glabrous; bracteoles 1.5 – 6 × 0.5 – 1.5 mm, ovate, acute, scarious except for green midrib, caducous; pedicels 3 – 7 mm; sepals unequal, somewhat variable in structure, glabrous, fleshy, white or pale green with darker spots and green apex, abaxially often with a prominent toothlike appendage; outer sepals 6 – 7 × 3 mm, obovate or elliptic, obtuse, inner 9 – 10 × 4 mm, suborbicularobovate, rounded to truncate with prominent angles, margin scarious; corolla 4 – 5.5 cm, white, lilac or pink, glabrous, funnel-shaped, limb c. 4 cm diam., unlobed. Capsule subglobose, 7 – 8 mm, shortly rostrate, glabrous; seeds lanate.
Ipomoea barbatisepala A. Gray
Ipomoea barteri Baker
!Ipomoea batatas (L.) Lam.
Key: Trailing plant, rooting at nodes; sepals prominently veined, terminating in a hair point
Key: Sepals thinly to densely pilose; creeping perennial rooting at nodes, cultivated or escaped
Ipomoea batatas (L.) Lam. (Lamarck 1793: 465).
Convolvulus batatas L. (Linnaeus 1753: 154). Type: India, Herb. Linn. No. 77.5 (S), lectotype designated by Biju 2002: 755).
Creeping perennial herb rooting from the stem and developing root tubers, stems extending to cover several metres, glabrous to coarsely pilose. Leaves petiolate, very variable in form but usually rather large, 3 – 15 × 5 – 12 cm, ovate or shallowly to deeply 3 – 5-lobed, cordate, shortly acuminate, both surfaces glabrous to coarsely pilose, abaxially somewhat glaucous and with prominent veins; petioles usually rather long, 4 – 15 cm. Inflorescence of long-pedunculate, axillary, dense umbellate cymes; peduncles 5 – 30 cm long, stout; bracteoles filiform, c. 2 mm long, caducous; secondary peduncles 5 – 15 mm; pedicels very short, 5 – 10 mm long; sepals 7 – 11 mm, unequal, margins often but not always ciliate, outer shorter than inner, oblongelliptic to oblong-oblanceolate, abruptly mucronate with a hair point c. 2 mm long, prominently 1 – 5-veined, the inner sepals broadly elliptic, rounded and mucronate; corolla 4 – 4.5 cm, pink, often with a dark centre, glabrous; ovary pubescent (rarely glabrous), rarely fertile so capsule and seeds usually absent.
Ipomoea batatas var. porphyrorhiza Griseb.
!Ipomoea batatoides Choisy
Key: Peduncles mostly > 1.5 cm long so inflorescence lax; corolla uniformly pink or white on exterior
Ipomoea batatoides Choisy (1838: 58). Type: Brazil, Bahia, Blanchet (holotype G-DC, not seen)
Ipomoea philipsonii O’Donell (1953: 378), synon. nov. Type: W. R. Philipson, J. M. Idrobo & A. Fernandez 1396 (holotype BM!).
Twining perennial to 4 m, stems usually glabrous. Leaves petiolate, 3 – 11 × 2.5 – 8 cm, ovate, weakly cordate with rounded auricles, shortly acuminate to an acute apex, occasionally slightly undulate-denticulate or weakly 3- lobed, glabrous or, rarely, pubescent, lower surface paler, often dotted with glands orminute hair bases; petioles 2 – 7 cm, characteristically slender. Inflorescence of lax pedunculate, axillary cymes; peduncles 3 – 10 cm; secondary peduncles 1.5 – 3 cm, bracteoles filiform, 4mm, caducous; pedicels 5 – 15 mm long; sepals subequal, coriaceous and somewhat concave, 6 – 10 × 5 mm, broadly oblong, rounded, usually glabrous, margins narrowly scarious; corolla 4 – 8 cm, inflated above a narrow basal tube, then gradually widened, pink or, less commonly, white, glabrous, limb 5 – 6 cm diam., unlobed. Capsule 8 × 6 mm, ellipsoid, glabrous, rostrate, seeds woolly.
Ipomoea bernoulliana Peter
Ipomoea biflora (L.) Pers.
Ipomoea biloba Forssk.
Ipomoea blanchetii Choisy
Ipomoea blepharophylla Hallier f.
Ipomoea blepharosepala Hochst. ex A. Rich.
Ipomoea bolusiana Schinz
Ipomoea bombycina (Choisy) Benth. & Hook. f.
Ipomoea bonariensis Hook.
Key: Indumentum of stellate hairs
Ipomoea bonariensis Hook. (Hooker 1839: t. 3665). Type: Cultivated plant grown from seed collected by Tweedie at Buenos Aires (lectotype K 00612912, designated here).
A very variable trailing or, more commonly, twining perennial to at least 3 m in height, roots tuberous, stems becoming woody when old, sparsely or densely roughly hirsute with stellate hairs. Leaves petiolate, usually 3 – 9 × 3 – 9 cm, ovate, obtuse and mucronate, commonly 3 – 5-lobed to about half way or margin sinuate, adaxially dark-green, asperous, stellatepubescent, abaxially grey, stellate-tomentose; petioles 1 – 6 cm. Inflorescence of pedunculate, 1 – 10-flowered, axillary cymes, sometimes becoming racemose in form; peduncles 2 – 8 cm, stout, asperous-stellatehirsute; bracteoles scale-like, caducous; secondary peduncles 1 – 3.5 cm; pedicels 2 – 10 mm (very rarely more); calyx globose, sepals slightly unequal, coriaceous, concave, obtuse, usually glabrous, the margins scarious, outer 5 – 8 × 4 – 5 mm, elliptic, inner slightly broader and longer; corolla 4 – 7 cm, funnel-shaped, pink, glabrous, limb c. 4 cm diam., shallowly lobed. Capsule narrowly ovoid, 11 – 12 × 7 mm, glabrous, seeds 5 – 7 mm long, pilose with hairs 10 mm long.
Ipomoea bonariensis var. erecta
Ipomoea bonariensis var. erecta J. R. I. Wood & R. W. Scotland, var. nov. Type: Paraguay, Nueva Asunción, cerca del cuartel de Gral. Eugenio A. Garay, A. Charpin & L. Ramella 21528 (holotype G).
RECOGNITION. Differs from all other forms and varieties of I. bonariensis by being an erect undershrub at least 30 cm high with a woody stem 3 – 10 mm thick and a subterminal inflorescence with cymes arising from the uppermost leaf axils. In both specimens of this variety the leaves are shallowly, palmately 5-lobed.
Ipomoea bonariensis var. chacoensis O’Donell
!Ipomoea bracteata Cav.
Ipomoea bracteata var. pubescens Rob. & Greenm.
Ipomoea brasiliana Meisn.
Ipomoea brassii C.T. White
Ipomoea burchellii Meisn.
Ipomoea cairica (L.) Sweet
Key: Petioles with stipular-like outgrowths at base
Ipomoea cairica (L.) Sweet (1826: 287).
Convolvulus cairicus L. (Linnaeus 1759: 922). Type: “Convolvulus Aegyptius” Vesling in Alpinio, Pl. Aegypti 73 – 74 (1640), designated by Bosser & Heine (2000).
Twining perennial herb to 3 m, stems glabrous, often muricate. Leaves petiolate, digitately divided into 5 – 7 leaflets, the laterals sometimes joined at base, leaflets 1 – 5 × 0.3 – 1 cm, lanceolate or oblonglanceolate, acute and mucronate, glabrous; petioles with stipule-like outgrowths at base, 1 – 5 cm. Flowers usually solitary, sometimes in shortly pedunculate, 2 – 3- flowered axillary cymes; peduncles 0.3 – 1 cm; bracteoles 1 – 2mm, oblong, caducous; pedicels 0.3 – 2.5 cm; sepals subequal, glabrous with scarious margins, outer 5 – 7 × 4 mm oblong-ovate, acute, inner 6 – 8 mm, broadly ovate-elliptic, obtuse; corolla 4.5 – 7 cm, funnel-shaped, pink, glabrous, limb 4 cm diam., unlobed. Capsule 1 – 1.3 cm, subglobose, glabrous; seeds 5 – 6 mm, tomentellous with longer caducous marginal hairs.
Ipomoea cairica var. cairica
Ipomoea cairica var. gracillima (Collett & Hemsl.) C.Y. Wu
Ipomoea calantha Griseb.
Ipomoea caloneura Meisn.
Key: Stem and leaves thinly pilose
Ipomoea caloneura Meisn. (Meisner 1869: 281). Type: Brazil, Goyaz, Burchell 6582 (holotype BR 0000006972875!, isotype K000612845!)
Ipomoea tapirapoanensis Hoehne (1938: 38) Type: Brazil, Mato Grosso, Tapirapoa[n], F. C. Hoehne 1668 (isotype R!).
Trailing or climbing perennial, stems thinly pilose. Leaves petiolate, 2 – 6 × 2.5 – 8 cm, base cordate with rounded auricles, margin somewhat undulate, 3-lobed to about half way, lobes acute to shortly acuminate, central lobe elliptic, narrowed at base, laterals broadly ovate, both surfaces pilose, abaxially paler; petioles 1.5 – 3 cm, pilose. Inflorescence of mostly 3 – 5- flowered axillary cymes, peduncles 3 (– 11) cm, glabrous or thinly pilose; bracteoles linear-lanceolate, 2 – 4 mm; secondary peduncles 1 – 4.5 cm; pedicels 6 – 20 mm, glabrous or, rarely, thinly pilose; sepals unequal, coriaceous, concave, glabrous, margins scarious, when fresh pale green, shiny; outer sepals 6 – 7 × 4 mm, elliptic, obtuse, inner 10 – 11 mm, obovate, obtuse; corolla 6 – 7 cm long, funnel shaped, pale pink with dark centre, glabrous, limb c. 5 cm diam., lobed. Capsule 7 – 8 × 6 mm, ovoid, glabrous, rostrate; seeds 4 – 5 × 2.5 mm pale brown, glabrous apart from lanate angles with hairs c. 10 mm long.
Ipomoea calyptrata Dammer
Key: Woody liana; sepals 14 – 22 mm long
Ipomoea calyptrata Dammer (1897: 40). Type: Brazil, Minas Gerais, near Arrasnaby, Glaziou 15265 (holotype B†, isotypes K000612835, P03878984, R).
Vigorous liana-like climber reaching 5 m, stems woody, subtomentose. Leaves petiolate, large, 4 – 16 × 5 – 14 cm, ovate to subreniform, apex rounded or retuse, mucronulate, base shallowly cordate to subtruncate, margin slightly undulate. adaxially grey-tomentellous, abaxially white tomentose with conspicuous venation; petioles 1.5 – 5 cm, tomentose. Inflorescence of fewflowered pedunculate, axillary cymes; peduncles 3 – 5 cm, tomentose; bracteoles 20 × 4 mm, oblanceolate, abaxially grey-tomentose, adpressed to calyx; secondary peduncles 10 – 15 mm; pedicels 2 – 7 mm, tomentose; sepals subequal, 1.4 – 2.2 × 0.8 – 1.4 cm, oblong-obovate, rounded, densely white tomentose; corolla 6 – 7 cm long, pink, funnel-shaped, densely sericeous, limb 7 cm diam., unlobed. Capsule 2 × 1.5 cm, ovoid, glabrous; seeds pilose with long white hairs.
Ipomoea calystegioides Hallier f.
Ipomoea cana E. Mey.
Ipomoea capillacea (Kunth) G. Don
Ipomoea carajasensis D.F. Austin
Ipomoea cardenasiana O’Donell
Key: Sepals minutely puberulent, broad, obtuse; corolla pale pink
Ipomoea cardenasiana O’Donell (1950a: 375). Type: Brazil, Mato Grosso, Urucúm, M. Cardenas 4448 (holotype LIL!).
Vigorous twining perennial to 3 m; stems stout, glabrous. Leaves petiolate, 4 – 10 × 3 – 8 cm, mostly 3-lobed to half way with acute lobes but some leaves ovate with one or two marginal teeth, base broadly cordate, apex shortly acuminate and mucronate, adaxially glabrous apart from veins pubescent near base, abaxially paler, pubescent especially on the veins; petioles 2 – 5 cm. Inflorescence of pedunculate, axillary cymes; peduncles 2 – 5 cm, stout, glabrous; bracteoles c. 5 mm long, oblong, mucronate, papery, caducous; secondary and tertiary peduncles 0.8 – 1.5 cm; pedicels 5 – 10 mm, pubescent; sepals slightly unequal, outer 15 – 20 × 10 – 12mm, ovate, narrowed to an obtuse apex, minutely puberulent, pale green; inner sepals 18 – 22 × 12 mm, elliptic, acuminate to an obtuse apex, sericeous, pallid; corolla 7 – 9 cm long, funnel-shaped, pale pink, pubescent in bud, glabrescent later, limb 5 cm diam., very shallowly lobed. Capsule ovoid, 15 × 10 mm, glabrous, brown, enclosed by sepals; seeds 11 × 6 mm (possibly immature), brown, pilose with very long marginal hairs.
Ipomoea cardiophylla A. Gray
!Ipomoea cardiosepala Meisn.
Ipomoea carnea Jacq.
Key: Erect undershrub to c. 2 m in height
Ipomoea carnea Jacq. (Jacquin 1760: 13). Type: Jacquin, Stirp. Amer. Hort. Pl. t. 18 (1763), lectotype designated by Austin (1977: 237).
Erect (subsp. fistulosa) or climbing (subsp. carnea) undershrub to 4m, often growing in clumps, stems stout, hollow, canescent when young, becoming glabrous. Leaves petiolate, 8 – 20 (– 30) × 3 – 10 (– 12) cm, ovate or elongateovate- deltoid, base cordate to subtruncate with rounded auricles, apex acuminate to long-acuminate, both surfaces canescent when young, glabrescent, veins prominent abaxially; petioles 3 – 8 cm. Inflorescence of longpedunculate axillary, somewhat compact cymes; peduncles 2 – 12 cm; bracteoles 3 – 4 mm, ovate or elliptic, caducous; secondary peduncles 3 – 7 mm; pedicels 5 – 15 mm, puberulent; sepals subequal, 5 – 6 × 7 – 8 mm, ovate to suborbicular, rounded, tomentellous,margins scarious; corolla 6 – 7 cm, funnel-shaped, pink, tomentellous in bud, ±glabrescent, limb 4.5 – 5 cm diam., shallowly lobed. Capsule 18 × 10mm, ellipsoid, glabrous; seeds 10 – 11 × 3 – 4 mm, woolly with very long hairs.
Two subspecies are widely recognised:
subsp. carnea
This is characterised by its climbing habit and ovate, shortly acuminate leaves. It is recorded as present in Bolivia by Austin&Huáman (1996: 6) but no specimen has been traced and the record was presumably based on erroneous information.
subsp. fistulosa (Mart. ex Choisy) D. F. Austin (1977: 237). Ipomoea fistulosa Mart. ex Choisy (1845: 349). Type: Brazil, C. F. Martius 2398 (lectotype M, designated by D. F. Austin 1977: 237).
This is characterised by its erect habit and elongate, long-acuminate leaves.
Ipomoea carnea subsp. carnea
Ipomoea carnea subsp. fistulosa (Mart. ex Choisy) D.F. Austin
Ipomoea carolina L.
Ipomoea caudata Fernald
Ipomoea cavalcantei D.F. Austin
Ipomoea cavanillesii Roem. & Schult.
Ipomoea cernua fo. chacoensis Hassl.
Ipomoea chamelana J.A. McDonald
Ipomoea cheirophylla O’Donell
Key: Leaves relatively small, mostly 4 – 6 × 5 – 7 cm; mostly dry habitats in the inter-Andean valleys and the lowlands
Ipomoea cheirophylla O’Donell (1959b: 141). Type: Argentina, Salta, Dep. Rosario de la Frontera, Las Termas, C. O’Donell 5360 (holotype LIL).
Twining perennial 2 – 5 m in height, stems wiry, glabrous or pubescent. Leaves petiolate, 4 – 6 (– 10) × 5 – 7 (– 10) cm, 5 – 7-lobed to just above the base, base truncate or broadly cordate and cuneate onto the petiole, lobes oblong-elliptic, narrowed at both ends, apex obtuse and mucronate, usually glabrous but pubescent in the Tarija area, petioles 1 – 4 (– 8) cm. Inflorescence of usually compound, axillary cymes of 1 – 5 (– 7) flowers; peduncles 2 – 8 cm, pubescent; bracteoles 2mm, oblanceolate, caducous; secondary peduncles 1.3 – 2.2 cm; pedicels 7 – 18 mm, pubescent; sepals slightly unequal, elliptic, concave, coriaceous with a very narrow scarious margin, glabrous or puberulent near base, the outer 6 – 10 × 3 – 5 mm, obtuse, inner 5 – 7 mm wide, rounded; corolla 4 – 5 cm, funnel-shaped, pink, glabrous, limb 4 cm diam., shallowly lobed. Capsule 10 × 8 mm, ellipsoid to subglobose, glabrous; seeds 5 – 6 mm long, dark brown, woolly.
Ipomoea chenopodiifolia (M. Martens & Galeotti) Hemsl.
Ipomoea chiliantha Hallier f.
Key: Corolla 4 – 4.5 cm long; inner sepals 6 – 7 mm long
Ipomoea chiliantha Hallier f. (1899b: 50). Type: Lorentz s.n. (holotype B†, lectotype GOET, designated here).
Twining or trailing perennial, all vegetative parts glabrous. Leaves petiolate, ovate but usually constricted in the middle to form a tapering acuminate apical portion, base cordate with rounded auricles, petioles 3 – 5 cm. Inflorescence of long pedunculate, axillary cymes, sometimes compounded; peduncles 5 – 13 cm, bracteoles 2 – 3 mm, lanceolate, caducous, secondary peduncles 0. 5 – 2 cm; pedicels 1 – 2.5 cm; sepals unequal, outer 5 mm long, elliptic, obtuse and mucronulate, inner 6 – 7 mm, broadly ovate-elliptic, rounded, scarious-margined; corolla 4 – 5.5 cm, funnelshaped, pink, darker in the centre, glabrous, limb 3 – 3.5 cm diam. Capsule 7 × 6 mm, ovoid, shortly rostrate, glabrous; seeds (immature), pubescent on the angles.
Ipomoea chilopsidis Standl.
Ipomoea chiriquiensis Standl.
Ipomoea cholulensis Kunth
Ipomoea chondrosepala Hallier f.
Key: Leaves glabrous
Key: Sepals 7 – 8 mm wide, greenish; corolla 7 – 9.5 cm, often pubescent in bud; inflorescence not markedly branched
Ipomoea chondrosepala Hallier f. (Hallier 1899b: 49). Type: Paraguay, Villa Rica, Balansa 1072 (lectotype P, designated here, isolectoypes G, K).
Liana reaching 6 m, stems glabrous. Leaves petiolate, 6 – 11 × 4 – 9 cm, ovate, base broadly cordate to subtruncate, apex very shortly acuminate, margin often denticulate near base, both surfaces glabrous, veins prominent abaxially; petioles 3 – 6 cm. Inflorescence of few-flowered, pedunculate, axillary cymes; peduncles straight, 3 – 10 cm; bracteoles caducous; secondary peduncles 2 – 2.5 cm; pedicels 1 – 3 cm; sepals somewhat unequal, broadly oblong, rounded to retuse (sometimes mucronulate), glabrous, margins scarious, outer sepals 10 – 12 × 6 mm; inner sepals 12 – 16 × 7 –8mm; corolla 6 – 9.5 cmlong, funnelshaped, pink, in Bolivia usually pubescent in bud and at tips of midpetaline bands, sometimes completely glabrous, limb 3 – 4 cm diam., weakly lobed. Capsule 15 – 16 × 11 – 12 mm, ovoid, glabrous; seeds 6 × 3.5 mm, woolly.
Ipomoea chrysocalyx D.F. Austin
Ipomoea chrysochaetia Hallier f.
Ipomoea cissoides var. subintegrifolia Meisn.
Ipomoea clausa Rudolphi ex Ledeb. & Adlerstam
Ipomoea clavata (G. Don) Ooststr. ex J.F. Macbr.
Key: Stem usually pilose with long hairs; sepals not prominently veined, 23 – 28mmlong; corolla blue
Ipomoea clavata (G. Don) Ooststr. ex J. F. Macbr. (Macbride 1931: 3).
Calonyction clavatum G. Don (1838: 264). Type: Ecuador, Ruiz & Pavon s.n. (holotype Herb. Lambert, not found at BM, isotype MA!).
Ipomoea contrerasii L. O. Williams (1970: 189). Type: Guatemala, Petén, Arroyo Paxcaman, Uaxactun, Contreras 3640 (holotype LL, isotype K!).
Twining perennial to c. 5 m; stems with long, white, stiff, spreading hairs. Leaves petiolate, 6 – 12 × 5 – 10 cm, ovate, sometimes shallowly 3-lobed or with a single lateral lobe, shortly acuminate and mucronate, cordate with rounded auricles, margin often undulate, glabrous, thin in texture, abaxially paler, main veins prominent; petioles 4 – 4.5 cm, pilose. Inflorescence of 1 (– 3)-flowered, axillary, pedunculate cymes; peduncles 0.4 – 2.5 cm, bracteoles 2 mm, lanceolate, caducous, pedicels 2 – 4 cm, darker than peduncle, conspicuously thickened upwards, glabrous; sepals subequal, 23 – 28 × 10 mm, broadly lanceolate, acuminate, glabrous, margin broad, scarious; corolla 7.5 – 11 cm, glabrous, broadly funnel-shaped, the tube white, limb blue, deeply lobed. Capsule ovoid, c. 2 cm long, glabrous; seeds 10 – 13 × 5 mm, shortly tomentose but with long yellowish marginal hairs.
Ipomoea clewellii C. Nelson
*Ipomoea coccinea Sessé & Moc.
!Ipomoea coccinea L.
Ipomoea coccinea var. coccinea
Ipomoea collina House
Ipomoea confertiflora Standl.
Ipomoea congesta R. Br.
Ipomoea consimilis Schulze-Menz
Ipomoea conzattii Greenm.
Ipomoea coptica (L.) Roth ex Roem. & Schult.
Ipomoea coptica var. acuta Choisy
Ipomoea coptica var. coptica
!Ipomoea cordata L.B. Sm. & B.G. Schub.
Ipomoea cordatotriloba var. australis (O’Donell) D.F. Austin
Key: Ovary and capsule pilose; sepals pilose
Ipomoea cordatotriloba Dennst. (Dennstedt 1810: 246). Type as for Convolvulus carolinus L.
Convolvulus carolinus L. (Linnaeus 1753: 154). Type: Icon. in Dillenius, Hortus Elthamensis t. 84 f. 98 (1732), designated by Staples in Staples & Jarvis (2006: 1020), non Ipomoea carolina (L.) Pursh.
Ipomoea carolina (L.) Pursh., nom. illeg., non Ipomoea carolina L. (1753).
Ipomoea trichocarpa Elliot (1817: 258). Type as for Convolvulus carolinus L.
Slender twining (occasionally trailing) annual herb, stems to 3 m, glabrous, thinly pilose with long white hairs or densely pubescent. Leaves petiolate, 2.5 – 8 × 1.5 – 6 cm, ovate-deltoid, or shallowly 3-lobed, narrowly cordate with rounded, entire or dentate auricles, apex shortly acuminate, mucronate, glabrous or thinly pilose on veins and margins or pubescent; petioles 0.5 – 5 cm. Inflorescence of axillary, pedunculate, umbelliform cymes, usually with 1 – 5 (– 9) flowers and more lax than in Ipomoea batatas; peduncles 2 – 9 cm; bracteoles 5 –7mm, filiform, pilose, relatively persistent; pedicels 4 – 9 mm; sepals subequal, usually ciliate with stiff spreading hairs, occasionally glabrous, outer sepals 8 – 11 mm, ovate, gradually narrowed to an outwardly curved fine point, the central vein usually distinct, inner sepals 10 – 12 mm, obovate, abruptly or gradually narrowed to a mucronate apex, less hairy; corolla 2.5 – 4 cm, gradually widened from base, pink with a dark centre, glabrous, limb c. 2.5 cm diam., unlobed. Capsule subglobose, 7 – 8 mm, pilose; seeds brown, hemispherical, 3.5 mm long, glabrous.
Ipomoea coriacea Choisy
Ipomoea cornucopia Chodat & Hassl.
Ipomoea corymbosa (L.) Roth
Key: Corolla campanulate; liana without copious white latex; leafy when flowering
Ipomoea corymbosa (L.) Roth ex Roem. & Schult. (Roemer & Schultes 1819: 232).
Convolvulus corymbosa L. (Linnaeus 1759: 923). Type: Burman, Pl. Amer. Plum. T. 89 f. 2, lectotype, designated by Stearn (1974: 7ff.).
Turbina corymbosa (L.) Raf. (Rafinesque 1838: 81).
Liana climbing to about 7 m over shrubs and small trees; stems woody, usually glabrous. Leaves petiolate, 4 – 10 × 3 – 9 cm, ovate, cordate with rounded auricles, narrowed to an obtuse, shortly mucronate apex, glabrous or (rarely) pubescent, abaxially paler; petioles 2 – 5 cm. Inflorescence of lax compound cymes terminal on the main stem and on lateral branchlets 5 – 20 cm long; secondary peduncles 1 – 5 cm, bracteoles c. 2 mm, scale-like; pedicels 7 – 17 mm, sepals slightly unequal, oblong, obtuse, nearly completely scarious, glabrous, outer 10 – 11 mm, inner 11 – 14 mm; corolla 2.5 – 3 cm, campanulate, cream with dark centre and yellowmidpetaline bands, glabrous, limb c. 1.5 – 2 cm diam. Capsule narrowly ovoid, 11 – 14 × 3 – 4 mm, glabrous, style persistent, seeds 1 – 2, 4 – 5 mm diam., subglobose, tomentose.
Ipomoea coscinosperma Hochst. ex Choisy
Ipomoea costata F. Muell. ex Benth.
Ipomoea costellata Torr.
Ipomoea crassicaulis (Benth.) B.L. Rob.
Ipomoea crassifolia Cav.
Ipomoea crassipes Hook.
Ipomoea crepidiformis Hallier f.
Ipomoea crinicalyx S. Moore
Key: Outer sepals 12 – 14 mm long; leaves glabrous or puberulent; peduncles 0.5 – 8 cm long; corolla pink
Ipomoea crinicalyx S. Moore (1895: 402). Type: Brazil, Mato Grosso, S. Moore 953 (holotype BM!).
Twining perennial herb, stems glabrous or puberulent. Leaves petiolate, 3 – 9 × 3 – 9 cm, broadly ovate, cordate with broad sinus, acuminate, glabrous or shortly adpressed pubescent; petioles 1 – 6 cm. Inflorescence of pedunculate axillary cymes; peduncles 0.5 – 8 cm; bracteoles very variable sometimes small, linear, caducous, sometimes large, expanded and leaflike; secondary peduncles (if present), 2 – 6 mm, pedicels 8 – 21 mm; sepals slightly unequal, oblong-ovate, acute, covered in soft spines, otherwise glabrous, puberulent, or, frequently, farinose, outer 12 – 14 × 4 – 5 mm, inner 14 – 15 × 5 – 6 mm, the scarious margins and upper part spineless; corolla 5.5 – 8 cm, pink, glabrous outside, limb 4 – 5 cm, unlobed. Capsule ovoid, glabrous, 14 – 15 × 12 mm with stout rostrate apex 5 mm long; seeds c. 5 mm, flattened ellipsoid, minutely tomentellous with long, dense, brownish marginal hairs.
Ipomoea cristulata Hallier f.
**Ipomoea crocea McPherson ex Breedlove
Ipomoea cuernavacensis House
!Ipomoea cuneifolia Meisn.
*Ipomoea cuneifolia A. Gray
Key: Leaves oblong-oblanceolate; inflorescence terminal on stems
Ipomoea cuneifolia Meisn. (Meisner 1869: 245). Type: Brazil, Goiás, 17 Jan. 1829, Burchell 8501-2 (holotype BR 0000006972578!, isotype K000612804!, barcode ambiguously placed).
Erect undershrub to 1.5 m, stem woody, hispid-pilose with multicellular hairs, roots tuberous. Leaves subsessile, 3 – 6 × 1.2 – 2 cm oblong-oblanceolate, apex rounded and mucronate, base cuneate and slightly asymmetric, adaxially densely grey-pubescent, abaxially hispidhirsute and gland-dotted, petioles 0 – 5 mm. Inflorescence terminal, simple, short to somewhat elongate, formed of shortly pedunculate cymes from the uppermost leaf axils; peduncles 0.5 – 1 cm, diminishing in size upwards; bracteoles up to 6 × 2 mm, linear-lanceolate, caducous; pedicels 3 – 5 mm so cymes congested; sepals similar, 5 – 7 mm, ovateelliptic, obtuse, grey-tomentellous, slightly accrescent in fruit; corolla 4 cm, funnel-shaped, pink, appressed pilose, limb c. 3 cm diam., shallowly lobed. Capsule c. 10 × 6 mm, narrowly ovoid, glabrous; seeds woolly.
Ipomoea cyanantha Griseb.
Ipomoea cynanchifolia Meisn.
Key: Capsule ovoid, glabrous or pubescent
Ipomoea cynanchifolia Meisn. (Meisner 1869: 274). Type: Brazil, Minas Gerais, Lagoa Santa, Warming (lectotype BR, flowering portion on sheet, designated by O’Donell (1952: 218), isolectotype P).
Slender twining annual herb, nearly glabrous in all parts. Leaves petiolate, mostly 3 – 5.5 × 2 – 4.5 cm, ovate or shallowly 3-lobed, cordate with rounded to obtuse auricles, apex shortly acuminate, mucronate, adaxially thinly pubescent or glabrous; petioles 1.5 – 5 cm. Inflorescence of long pedunculate axillary umbelliform cymes with 2 – 5 flowers; peduncles 2 – 10 cm; bracteoles tiny, triangular, caducous; pedicels 5 – 15 mm; sepals subequal, oblong-obovate with broad scarious margins, rounded and mucronate, usually glabrous but occasionally ciliate; outer sepals 3.5 – 6 mm; inner sepals c. 1 mm longer; corolla 1.5 – 2.5 cm, funnel-shaped, pink with a dark centre, glabrous, limb 1.5 – 1.75 cm diam., unlobed, sometimes dentate. Capsule 2 – 3 × 4 mm, ovoid, exceeding sepals, glabrous or thinly pilose, the slender style somewhat persistent; seeds 3 – 3.5 × 2.5 mm, ellipsoid, dark brown, glabrous.
Ipomoea dactylophylla Griseb.
Ipomoea darainensis Deroin, Ranir. & Nusb.
Ipomoea decasperma Hallier f.
Ipomoea decemcornuta O’Donell
Ipomoea decora Meisn.
Ipomoea delphinifolia M. Martens & Galeotti
Ipomoea delphinioides Choisy
Ipomoea densibracteata O’Donell
Key: Bracteoles large, foliose, concealing the calyx, persistent at least until fruit is formed
Ipomoea densibracteata O’Donell (1950b: 438). Type: Bolivia, Santa Cruz, Prov. Cordillera, Cabezas, I. Paredo 453 (holotype LIL).
Vigorous climber or liana to 4 m, stems stout, densely pubescent. Leaves petiolate, 3 – 9 × 2 – 8 cm, ovate, obtuse and mucronate, margin undulate, cordate and cuneate onto the petiole, adaxially green, densely pubescent, beneath grey-subtomentose; petioles 1 – 3 cm, subtomentose. Inflorescence of solitary bracteate flowers aggregated into dense cymes or racemes; bracts resembling small leaves, peduncles 1 – 3.5 cm, densely pilose to tomentose; bracteoles foliose, 1.2 – 2.5 × 0.5 – 0.8 cm, oblong-elliptic, obtuse, narrowed to a cuneate base, persistent; pedicels 0 – 5 mm; sepals hidden by bracteoles, subequal, 8 – 9 × 4 – 6 mm, elliptic, obtuse, coriaceous, concave, somewhat pubescent when young, glabrescent and completely glabrous when in fruit; corolla 5 – 8 cm long, funnel-shaped, pink with a darker centre, glabrous, limb 2.5 – 4 cm diam., undulate. Capsule enclosed by persistent bracts, 7 – 8 × 5 mm, glabrous, ovoid, rostrate; seeds 5 mm, oblong, long-pilose.
Ipomoea descolei O’Donell
Ipomoea desmophylla Bojer ex Choisy
Ipomoea desrousseauxii Steud.
Ipomoea diamantinensis J.M. Black
!Ipomoea digitata L.
Ipomoea dimorphophylla Greenm.
Ipomoea riparum Standl. & L.O. Williams
!!Ipomoea discolor (Kunth) G. Don
***Ipomoea discolor Jacq.
Ipomoea diversifolia R. Br.
!Ipomoea dubia Roem. & Schult.
Ipomoea dumetorum Willd. ex Roem. & Schult.
Key: Corolla pink; sepals dotted with small dark blotches
Ipomoea dumetorum Willd. ex Roem. & Schult. (Roemer & Schultes 1819: 789). Type: sin loc, probably Colombia or Ecuador, Humboldt & Bonpland (holotype B).
Twining annual herb, stems glabrous, sometimes muricate. Leaves petiolate, mostly 4 – 10 × 3 – 7 cm, ovate-deltoid (rarely 3-lobed), hastate to broadly cordate, auricles rounded or acute, apex acute and finely mucronate, margin entire or with a large marginal tooth, both surfaces usually glabrous but sometimes abaxially pubescent on veins near base; petioles 2.5 – 4 (– 8) cm. Inflorescence of pedunculate axillary cymes; peduncles 2 – 8 cm, sometimes paired, glabrous or hirsute at base; bracteoles 2 – 3 mm, narrowly linear-lanceolate, acuminate, ±persistent; secondary peduncles short, 0.5 – 1 cm; pedicels mostly 1 – 1.5 cm, often recurved in bud; sepals slightly unequal, the inner slightly shorter than the outer, 5 – 6 mm, broadly ovate to elliptic, obtuse, mucronulate, pale green with prominent dark spots and pale margins, outer sepals sometimes muricate; corolla 2 – 2.8 cm, broadly funnel-shaped, glabrous, tube pale pink or white, limb pink (sometimes reported to be bluish), c. 2 cm diam. Capsule glabrous, ovoid, rostrate, the persistent style c. 2 mm long; seeds 5 – 6 × 2 – 2.5 cm, black, minutely tomentellous.
Ipomoea dumosa (Benth.) L.O. Williams
Ipomoea durangensis House
Ipomoea echinocalyx Meisn.
Key: Outer sepals 15 – 25 mm long; leaves pubescent; peduncles < 0.5 cm long; corolla usually white or cream
Ipomoea echinocalyx Meisn. (Meisner 1869: 223). Type: Brazil. Minas Gerais, Lagoa Anta, Warming (holotype BR!).
Twining perennial herb reaching 4 m; stems thinly to densely pubescent. Leaves petiolate, 7 – 20 × 6 – 15 cm, ovate, cordate with rounded auricles, shortly acuminate, both surfaces pubescent but abaxially more densely so and paler; petioles 5 – 18 cm, pubescent. Inflorescence of 1 – 3-flowered, axillary cymes; peduncles 0 – 4 mm; bracteoles deltoid, up to 8 mm long; pedicels 15 – 40 mm, unequal in length, thinly pilose; sepals unequal, outer 15 – 25 × 3 – 4 mm, lanceolate or narrowly ovate, acuminate, covered in soft spines, which diminish towards the apex, thinly pilose with white hairs, inner sepals 12 – 16 mm, lanceolate, terminating in a long mucro, thinly pilose but nearly spineless, margins scarious; corolla c. 7 cm, funnel-shaped, cream or white, glabrous outside, limb slightly lobed, c. 5 cm diam. Capsule and seeds unknown.
Ipomoea echioides Choisy
Ipomoea eggersiana Peter
Ipomoea elongata Choisy
Ipomoea emeiensis Z.Y. Zhu
Ipomoea eremnobrocha D.F. Austin
Ipomoea eriocarpa R. Br.
**Ipomoea fastigiata (Roxb.) Sweet
Ipomoea ficifolia Lindl.
Ipomoea fiebrigii Hassl. ex O’Donell
Ipomoea filipedunculata Rusby
Ipomoea fimbriosepala Choisy
Key: Annual; bracteoles 3 – 5 mm wide; corolla 2.5 – 3.5 cm long
Ipomoea fimbriosepala Choisy (1845: 559). Type: Cultivated plants from Madagascar, Lindley (syntype CGE 14254) and Mauritius, Bouton s.n. (syntype G00135515).
Twining annual herb, young stems glabrous, older stems setose. Leaves petiolate, 4 – 9 × 3 – 5 cm, narrowly (to broadly) deltoid, base sagittate to hastate, auricles acute to obtuse, glabrous, abaxially paler; petioles 2 – 7.5 cm. Inflorescence of 1 (– 2)-flowered axillary, pedunculate cymes; peduncles 0.5 – 3.5 cm; bracteoles 8 – 15 × 3 – 5 mm, ovate, acuminate to apiculate, membranous, pale green, moderately persistent; pedicels 1 – 2.5 cm; outer sepals 13 – 20 × 7 – 10 mm, ovate, apex finely mucronate, base truncate, abaxially 3-winged, the wings smooth or (especially below) dentate, inner sepals c. 5 mm shorter, unwinged; corolla 2.5 – 3.5 cm, funnel-shaped, pink, glabrous, limb c. 5 cm diam., shallowly lobed, the lobes acute. Capsule 12 – 15 × 12 – 14 mm, ovoid, glabrous, enclosed by the sepals, seeds 5 – 6 mm long, minutely tomentellous.
Ipomoea fistulosa Mart. ex Choisy
Ipomoea flavivillosa Schulze-Menz
Ipomoea floribunda Moric.
Ipomoea fruticosa Kuntze
Ipomoea fuchsioides Griseb.
Ipomoea fulvicaulis (Hochst. ex Choisy) Hallier f.
Ipomoea fulvicaulis var. asperifolia (Hallier f.) Verdc.
Ipomoea fulvicoma Hance
Ipomoea funis Schltdl. & Cham.
Ipomoea funis var. langlassei (House) O’Donell
Ipomoea furcyensis Urb.
Ipomoea garckeana Vatke
Ipomoea gentryi Standl.
Ipomoea geophilifolia K. Afzel.
Ipomoea gesnerioides J.A. McDonald
Ipomoea gigantea (Silva Manso) Choisy
*Ipomoea githaginea Hochst. ex A. Rich.
Ipomoea globosa (La Llave) Meisn.
Ipomoea gnaphalosperma Hochst. ex Choisy
Ipomoea goyazensis
Key: Peduncles and pedicels very short so flowers appear clustered in leaf axils; corolla tube white, the limb pink
Ipomoea goyazensis Gardner (1842b: t. 479). Type: not found at BM, K or OXF, possibly the original image.
Ipomoea decora Meisn. (Meisner 1869: 272). Type: Brazil. Goiás, Pohl 1760 (isotypes K!, OXF!).
Twining perennial liana to 6 m, stems rather thin but slightly woody, usually completely glabrous but rarely appressed pilose. Leaves petiolate, 4 – 12 × 3 – 10 cm, ovate-deltoid, obtuse and mucronate, both surfaces glabrous or pubescent, adaxially dark green, abaxially very pale with prominent venation; petiole rather short, 1.5 – 3.5 cm. Inflorescence of subsessile, clustered cymes; peduncles 1 – 6 mm, glabrous; bracteoles scale-like, caducous; pedicels 0 – 7 mm, glabrous; sepals subequal, 7 – 10 mm, elliptic, obtuse to rounded, concave, coriaceous, glabrous, whitish-green when fresh, inner sepals with scarious margins; corolla 5 – 6 cm, funnelshaped, gradually widened from base, glabrous, tube white, limb deep pink, weakly lobed, 2 – 2.5 cm diam. Capsule (immature), subglobose, glabrous.
Ipomoea gracilis R. Br.
!Ipomoea grandiflora (L. f.) Lam.
Ipomoea grandifolia (Dammer) O’Donell
Key: Ovary and capsule hirsute; sepals 9 – 11 mm long
Ipomoea grandifolia (Dammer) O’Donell (1952: 222).
Jacquemontia grandifolia Dammer (1897: 41). Type: Brazil, Rio de Janiero, Glaziou 11257 (holotype B†, isotypes C, K!).
This is distinguished from Ipomoea cordatotrilobata by the shorter corolla (1.5 – 2.5 cm long).
Ipomoea grantii Oliv.
Ipomoea granulosa Chodat & Hassl.
Ipomoea grayi Rose
Ipomoea guaranitica Chodat & Hassl.
Ipomoea haenkeana Choisy
Key: Leaves oblong-obovate, abaxially grey-tomentose; sepals 7 mm long
Ipomoea haenkeana Choisy (1845: 358). Type: Bolivia, “Cochabamba”, T. Haenke (holotype BR006973261 ex Herb. Mart).
Erect perennial to 2 m, branched towards the apex, stems woody, tomentellous. Leaves subsessile, mostly 3 – 6 × 2 – 4 cm, oblong-obovate, apex rounded and apiculate, base rounded to truncate, slightly asymmetric, adaxially dark green and thinly pilose to subglabrous, abaxially grey-tomentose, petioles 0 – 4 mm. Inflorescence of shortly pedunculate cymes from the uppermost leaf axils forming a terminal panicle of raceme-like branches; peduncles 1 – 3 cm; bracteoles 9 – 12 × 1 – 2 mm, lanceolate, acute, ±persistent; pedicels 2 – 5 mm (so cymes very dense); sepals subequal, 7 – 9 × 3 – 4 mm, oblong-ovate, acuminate to shortly apiculate, grey-sericeous; corolla 3.5 – 4 cm, funnel-shaped, pale pink with a darker centre, pubescent outside, the limb 2.5 – 3.5 cmin diam. Capsule and seeds not known.
Ipomoea halierca I.M. Johnst.
Ipomoea harlingii D.F. Austin
!Ipomoea hartwegii Benth.
Ipomoea hastigera var. hastigera
!Ipomoea hederacea Jacq.
Ipomoea hederacea var. integriuscula A. Gray
Ipomoea hederifolia L.
Key: Outer sepals 1.5 – 3 mm long; fruiting capsule muticous, the style deciduous
Ipomoea hederifolia L. (Linnaeus 1759: 925). Type: “Ipomoea foliis cordatis” in Plumier in Burman, Pl. Amer. 4: 82, t. 93, f. 2 (1756), designated by O’Donell (1959a: 48).
Ipomoea coccinea auct., non L.
Twining annual, stems glabrous or thinly pilose. Leaves petiolate, 2 – 12 × 2 – 11 cm, variable in shape, most commonly 3-lobed to about half way, sometimes very shallowly lobed so leaf coarsely 3 – 5-dentate, sometimes simply ovate, apex acute or obtuse, mucronate, base cordate with obtuse auricles, glabrous to thinly pubescent; petioles mostly 1 – 6 cm. Inflorescence of pedunculate, axillary cymes; peduncles 5 – 15 cm long, bracteoles ovate, c. 1 mm, caducous; secondary peduncles 1 – 2.5 cm; pedicels 3 – 12 mm, remaining erect in fruit; sepals slightly unequal, oblong-elliptic, obtuse to rounded with a prominent awn, margins scarious, glabrous, outer sepals 1.5 – 3 mm with mucro mostly 2 – 5 mm long, inner slightly larger with broader scarious margins; corolla red, hypocrateriform, glabrous, the tube 2 – 4 cm long, slightly widened upwards, limb 1.8 – 2.5 cm diam., very shallowly lobed to entire, weakly spreading, acute; stamens exserted. Capsule 5 – 7 mm, subglobose, lacking an apical mucro, glabrous; seeds 3 – 4 mm long, shortly tomentose.
!Ipomoea heptaphylla Sweet
*Ipomoea heptaphylla Griseb.
Ipomoea hermanniae (L’Hér.) G. Don
Ipomoea herpeana Deroin
Ipomoea heterodoxa Standl. & Steyerm.
!Ipomoea heterophylla Ortega
Ipomoea heterophylla var. subcomosa House
!Ipomoea heterotricha Didr.
*Ipomoea heterotricha Meisn.
Ipomoea hieronymi (Kuntze) O’Donell
Ipomoea hieronymi var. hieronymi
Ipomoea hieronymi var. kurtziana (O’Donell) O’Donell
Key: Sepals ovate, 9 – 11 mm long
Ipomoea hieronymi (Kuntze) O’Donell (1948: 171). Murucoa hieronymi Kuntze (1898: 217). Type: Argentina, Salta. San José, Lorentz & Hieronymus 220 (holotype B†, isotypes GOET!, CORD!).
Argyreia megapotamica Griseb. (Grisebach 1879: 263), non Ipomoea megapotamica Choisy (1845). Type: Argentina, Cordoba, Ascochinga, Lorentz s.n. (possible lectotype, fide O’Donell 1948: 179, CORD n.v.).
Ipomoea kurtziana O’Donell (1948: 179), nom. nov., based on Argyreia megapotamica Griseb.
Ipomoea hieronymi var. kurtziana (O’Donell) O’Donell (1959b: 163).
Vigorous perennial or liana, stems pubescent to tomentellous. Leaves petiolate, 4 – 10 (–15) × 4 – 10 (– 15) cm, ovate, cordate with rounded auricles, apex rounded and mucronate to acute or very shortly acuminate, adaxially dark green and densely puberulent, abaxially white-tomentose; petioles 2 – 11 cm, densely puberulent or tomentose. Inflorescence of longpedunculate axillary cymes, usually 3 – 5-flowered; peduncles 3 – 20 cm, tomentose, bracteoles 5 mm long, ovate, caducous; secondary peduncles mostly 6 – 10 mm; pedicels 5 – 12 mm, tomentose; sepals subequal, 9 – 11 × 6 – 7 mm, ovate, grey-tomentose, often with a dark gland at base, acute to obtuse, inner slightly shorter with scarious margins; corolla 4.5 – 7 cm, funnel-shaped, pink, tomentellous, limb c. 4 cm diam. Capsule ovoid, 8 – 10 mm long, glabrous, seeds 7 – 8 mm long, glabrous except sericeous angles.
Ipomoea hildebrandtii Vatke
Ipomoea hildebrandtii subsp. hildebrandtii
Ipomoea hintonii L.O. Williams
Ipomoea hirsutissima Gardner
Key: Sepals > 12 mm long, finely acuminate; plant densely covered in stiff spreading hairs
Ipomoea hirsutissima Gardner (1842a: t. 471). Type: Brazil, Gardner 3355 (holotype K!, isotype P!).
Ipomoea chrysotricha Meisn. var. boliviana Meisn. (Meisner 1869: 243). Type: Bolivia, Santiago de Chiquitos, A. D’Orbigny 928 (P03878901!, lectotype designated here).
Erect herb to about 40 cm with a large woody tuberous root, the whole plant densely pilose with rather stiff white hairs swollen at the base. Leaves subsessile, 3 – 8 × 1 – 3.5 cm, oblong – obcuneate, obtuse, base cuneate, both surfaces pilose, green; petioles 0 – 2 mm. Inflorescence of solitary (rarely paired), pedunculate axillary flowers arising from the upper leaf axils; peduncles 1 – 4 cm; bracteoles 10 – 25 × 1 – 1.5 mm, linear-lanceolate, finely acuminate, caducous; pedicels 3 – 6 mm; sepals slightly unequal, narrowly ovate, acuminate, pilose, 13 – 16 × 4 mm, inner sepals similar but with broad, glabrous margins; corolla 6 – 7 cm long, funnelshaped, gradually widened from base, pink, pilose, the hairs with dark bases, limb c. 5 cm diam., shallowly lobed. Capsule 12 × 5 mm, narrowly ovoid, glabrous; seeds 7 × 2 – 3 mm, dark brown, glabrous except for shortly pilose angles.
Ipomoea hirtifolia R.C. Fang & S.H. Huang
Ipomoea hochstetteri House
!Ipomoea holosericea Weinm.
Ipomoea horsfalliae Hook.
Ipomoea ignava House
Ipomoea igualensis Weath.
Ipomoea imperati (Vahl) Griseb.
Ipomoea incarnata (Vahl) Choisy
Key: Plant completely glabrous; sepals prominently veined, 17 – 21 mm long; corolla pink (very dry inter-Andean valleys)
Ipomoea incarnata (Vahl) Choisy (1845: 359).
Convolvulus incarnatus Vahl (1798: 12). Type: Curaçao, von Rohr (lectotype C10009675, designated here).
Creeping (rarely twining) perennial herb, stems glabrous. Leaves petiolate, 3.5 – 6 × 1 – 2 cm, deltoid, acute and apiculate, base sagittate with wide-spreading, usually acute auricles, both surfaces glabrous, abaxially paler, somewhat reticulate; petioles 1 – 3 cm. Inflorescence of 1 (– 2) shortly pedunculate flowers; peduncles 0.6 – 1.7 cm; bracteoles minute, filiform, caducous; pedicels 2.2 – 4 cm, prominently nerved; sepals subequal, 17 – 21 × 4 – 5 mm, lanceolate, acuminate to a fine aristate point, glabrous, chartaceous, veins prominent, inner sepals with scarious margins; corolla 7 – 8 cm long, funnel-shaped, pink, glabrous, limb 6 – 7 cm diam. Capsule ovoid, 9 – 10 mm long, glabrous; seeds 4 – 5 mm long, shortly pubescent.
Ipomoea indica (Burm.) Merr.
Key: Flowers arranged in a dense cluster, the pedicels < 7 mm long
Key: Flowers in clusters with persistent linear bracteoles
Ipomoea indica (Burm.) Merrill (1917: 445).
Convolvulus indicus Burm. (Burman 1755: 6). Type: Besler, Hort. Eyst. Aest. Ord. 8: t. 2 (1613), lectotype designated by Fosberg (1976).
Ipomoea congesta R. Br. (Brown 1810: 485). Type: Australia, Queensland, Cape York Penisular, Banks & Solander (holotype BM).
Ipomoea acuminata (Vahl) Roem. & Schult. (Roemer & Schultes 1819: 228), non Ipomoea acuminata Ruiz & Pavon (1799).
Convolvulus acuminatus Vahl (1794: 26). Type: not found at C.
Twining perennial herb, stems pubescent. Leaves petiolate, 11 × 11 cm, ovate or, commonly, shallowly 3- lobed, both forms sometimes on the same plant, apex acuminate and shortly mucronate, base cordate with rounded auricles, adaxially pubescent, abaxially paler, pubescent to grey-tomentose; petioles 2.5 – 7 cm. Inflorescence of axillary, pedunculate clusters; peduncles 5 – 9 cm, pubescent; bracteoles ± persistent, pubescent, usually narrowly linear-lanceolate, acuminate, 4 – 10 × 0.5 – 1 mm but sometimes oblong-elliptic, foliose and shortly petiolate, c. 15 – 30 × 4 – 15 mm; secondary peduncles 2 – 3mm; pedicels very short, 2 – 7mm; sepals subequal, 13 – 20 × 3 – 5 mm, narrowly ovate, finely acuminate, pubescent, often somewhat spreading at maturity; corolla 5 – 6 cm, funnel-shaped, deep blue with violet midpetaline bands, drying pink, glabrous, limb unlobed, 4 – 5 cm diam. Capsule subglobose, 8 – 10 mm diam., glabrous, 6-seeded; seeds black, 4 – 5 mm long, appearing glabrous but minutely tomentellous.
Ipomoea indica var. acuminata (Vahl) Fosberg
Ipomoea indica var. variabilis (Schltdl. & Cham.) L.O. Williams
Ipomoea indivisa (Vell.) Hallier f.
Key: Fruiting pedicels deflexed; leaves always unlobed
Ipomoea indivisa (Vell.) Hallier f. (Hallier 1922: 20)
Convolvulus indivisus Vell. (Vellozo 1825 [1829]: 71). Type: Icon., Flora Flumenesis tab 50. (Vellozo 1827 [1831]), lectotype, designated here.
Very similar to Ipomoea hederifolia and I. rubriflora, differing from both in always having unlobed leaves which may be either entire or dentate. In habit, indumentum, sepal dimensions and rostrate capsule it is similar to I. rubriflora but in fruit it is easily distinguished by the reflexed fruiting pedicels. Flowering specimens can sometimes be impossible to separate but I. rubriflora often has 3-lobed leaves, whereas in I. indivisa the leaves are always unlobed.
Ipomoea intrapilosa Rose
Ipomoea invicta House
Ipomoea involucrata P. Beauv.
Ipomoea involucrata var. involucrata
Ipomoea involucrata var. operosa Verdc.
Ipomoea iostemma House
Ipomoea irwiniae Verdc.
Ipomoea jacalana Matuda
Ipomoea jaegeri Pilg.
!Ipomoea jalapa (L.) Pursh
Ipomoea jamaicensis G. Don
Ipomoea jicama Brandegee
Ipomoea jujuyensis O’Donell
Key: Stamens 4 – 5 cm long; leaf auricles not overlapping; pedicels pubescent; plant usually climbing
Ipomoea jujuyensis O’Donell (1948: 174). Type: Argentina, Jujuy, Lagunas de Yala, O’Donell 4835 (holotype LIL 182934!).
Twining perennial to 6 m from a tuberous rootstock, stems pubescent to subhispid. Leaves petiolate, 5 – 15 × 3.5 – 9 cm, ovate, shortly acuminate, cordate with rounded auricles, thinly adpressed pubescent; petioles 2 – 10 cm, pubescent. Inflorescence of pedunculate axillary cymes with up to five flowers; peduncle 5 – 15 cm, pubescent, stout; bracteoles 2 – 3mmlong, broadly lanceolate, caducous; pedicels 1 – 2.5 cm, thickened upwards, stout, pubescent, often deflexed at maturity; sepals slightly unequal, rounded and emarginate, usually mucronulate, the margins scarious, outer 6 – 8 × 5 – 6 mm, elliptic, obtuse, thinly pubescent, inner 7 – 8 × 8 – 9 mm, suborbicular, glabrous; corolla 6.5 – 9 cm, funnel-shaped from a short basal tube, violet, glabrous, limb 4.5 – 6 cm diam., undulate. Capsule ovoid, rostrate, glabrous, seeds tomentellous.
Ipomoea keraudreniae Deroin
Ipomoea killipiana O’Donell
Ipomoea kilwaensis Pilg.
Ipomoea kituiensis Vatke
Ipomoea kituiensis var. kituiensis
Ipomoea kotschyana Hochst. ex Choisy
Ipomoea kunthiana Meisn.
!Ipomoea lachnaea Spreng.
Ipomoea laciniata (Dalzell) C.B. Clarke
Ipomoea lacunosa L.
Ipomoea laeta A. Gray
Ipomoea lanata E.A. Bruce
Ipomoea lanuginosa O’Donell
Ipomoea lapathifolia Hallier f.
Ipomoea lapathifolia var. bussei (Pilg.) Verdc.
Ipomoea lapathifolia var. lapathifolia
Ipomoea lenis House
Ipomoea leprieurii D.F. Austin
Ipomoea leptophylla Torr.
Ipomoea leptotoma Torr.
*Ipomoea × leucantha Jacq.
!Ipomoea × leucantha Jacq.
Ipomoea leucotricha Donn. Sm.
Ipomoea lilloana O’Donell
Key: Seeds woolly; leaves dark green, undulate. Inter-Andean valleys
Ipomoea lilloana O’Donell (1948: 182). Type: Argentina, Salta, Dep. Campo Santo, Juramento, C. O’Donell 4910 (holotype LIL!).
Trailing perennial herb, stems sparsely pubescent, somewhat stout and slightly fleshy, up to 2 m long, rootstock stout, tuberous. Leaves petiolate, 3 – 7 × 3 – 7 cm, ovate-deltoid, ovate or suborbicular, obtuse to acute, base broadly cordate to subtruncate, the margin undulate to dentate, white-canescent when young but when mature adaxially dark green and glabrous, abaxially puberulent especially on the veins; petioles 1.5 – 3.5 cm, thinly pubescent. Inflorescence of shortly pedunculate 1 – 3-flowered cymes; peduncles 1 – 7.5 cm; bracteoles not known, fugacious; pedicels 5 – 10 mm; sepals slightly unequal, 8 – 10 × 6 – 7 mm at anthesis but accrescent to 13 mm in fruit, ovate-elliptic, pubescent, outer sepals subacute, inner sepals slightly longer, scarious-margined, obtuse to rounded, sometimes mucronate; corolla 4 – 7 cm, funnel-shaped, pink, densely adpressed pilose, limb 5 – 6.5 cmdiam., unlobed. Capsule 1.5 × 0.8mm, ovoid, acute to rostrate, glabrous; seeds 9 × 4 mm, densely woolly.
Ipomoea lindenii M. Martens & Galeotti
Ipomoea lindheimeri A. Gray
Ipomoea linearifolia Hook. f.
Ipomoea linosepala subsp. alpina (Rendle) Lejoly & Lisowski
!Ipomoea littoralis Blume
Ipomoea lobata (Cerv.) Thell.
Key: Corolla suburceolate, limb reduced to 5 tooth-like lobes
Ipomoea lobata (Cerv.) Thell. (Thellung 1919: 775).
Mina lobata Cerv. (Cervantes 1824: 3). Type: Cultivated plant from Mexico (holotype G).
Annual twining herb, stem usually glabrous. Leaves petiolate, 3 – 12 × 2.5 – 10 cm, ovate or, more commonly 3-lobed to about half way, base cordate with rounded auricles, apex shortly acuminate, obtuse and mucronate, near glabrous but sometimes puberulent on the veins beneath, abaxially paler; petioles 2 – 5 cm. Inflorescence of long-pedunculate axillary cymes appearing to form an elongate bifurcate raceme; peduncles (5 –) 10 – 16 (– 30) cm; rhachis above branching point, (2 –) 8 – 12 cm; bracteoles 1 – 2 mm, linear-lanceolate, moderately persistent; pedicels slender, 2 – 6 mm, longer below; sepals dissimilar, glabrous or, occasionally, thinly pilose, outer oblong-ovate, 2 – 3 × 1.5 mm with terminal awn 2 – 4 mm long, inner sepals with broader base, elliptic, 3 – 3.5 × 2 mmand awn 2 – 4 mm long; corolla tubular, curved, suburceolate, 1.8 – 2.5 cm long, yellow, red or orange, limb formed of 5 small tooth-like lobes; stamens strongly exserted; style exserted. Capsules subglobose, 7 mm diam., glabrous; seeds 4 mm long, pubescent with hairs in patches.
Ipomoea lonchophylla J.M. Black
Ipomoea longeramosa Choisy
Ipomoea longifolia Benth.
!Ipomoea longipedunculata (M. Martens & Galeotti) Hemsl.
Ipomoea longistaminea O’Donell
Ipomoea longituba Hallier f.
Ipomoea lottiae J.A. McDonald
Ipomoea lozanii Painter
Ipomoea lutea Hemsl.
Ipomoea luteoviridis Ekman & Leonard
Ipomoea macdonaldii E. Carranza
Ipomoea macedoi Hoehne
!Ipomoea macrantha Roem. & Schult.
Ipomoea macrocalyx (Ruiz & Pav.) Choisy
Ipomoea macrorhiza Michx.
Ipomoea macrosiphon Hallier f.
Ipomoea madrensis S. Watson
Ipomoea magniflora O’Donell
Ipomoea magnifolia Rusby
Key: Outer sepals 12 – 17 mm long, longer than the inner sepals; cymes long-pedunculate, peduncles 8 – 30 cm long
Key: Sepals pubescent
Ipomoea magnifolia Rusby (1896: 84). Type: Bolivia, Cochabamba, Espiritu Santo, M. Bang 1277 (lectotype NY, barcode 319197, designated here; isolectotypes: K, MO, NY, US barcode 0111417).
Vigorous liana to 7 m, stems pubescent. Leaves petiolate, very large, 11 – 20 × 7 – 20 cm, ovate (rarely shallowly 3-lobed), acuminate to a fine point, cordate with rounded auricles, thinly to densely adpressed pubescent on both surfaces; petioles 5 – 15 cm, pubescent. Inflorescence of long-pedunculate, axillary, rather compact cymes, peduncle 8 – 30 cm, pubescent; bracteoles 10 – 11 mm, linear or filiform, finely acuminate, caducous; secondary peduncles 1 – 1.5 (– 10) cm, pedicels 3 – 14 mm, pubescent; sepals very unequal, somewhat variable in shape and size, outer sepals 12 – 17 × 4 – 5 mm, broadly lanceolate, acuminate, the tips usually recurved, pilose to glabrous, inner sepals 7 – 10 × 3 – 4 mm, oblong, obtuse or acute, sometimes mucronate, pilose to merely ciliate, margin scarious; corolla 7 – 9 cm long, mauve, funnel-shaped with broad tube, in bud pubescent but glabrescent later, limb 5 – 6 cmdiam. Capsule and seeds not seen.
Ipomoea mairetii Choisy
Ipomoea malpighipila O’Donell
Ipomoea malvaeoides Meisn.
Ipomoea malvaeoides var. argentea O’Donell
Ipomoea malvaeoides var. heterophylla Hallier f.
Ipomoea malvaeoides var. integrifolia Chodat & Hassl.
Ipomoea malvaeoides var. lineariloba Hallier
Ipomoea marcellia Meisn.
Ipomoea marginata (Desr.) Verdc.
Ipomoea marginisepala O’Donell
Key: Peduncle not passing through the sinus of leaf base; sepals acute, always smooth
Key: Corolla 2.5 – 4 cm long (Native species of Inter-Andean valleys)
Ipomoea marginisepala O’Donell (1950c: 490). Type: Argentina, Tucuman, Dep. Tafí, Cerro Aconquija, Sotelo 415 (holotype LIL).
Relatively weak, probably annual, twining herb, glabrous in all parts. Leaves petiolate, 3 – 9 × 2.5 – 7 cm, ovate, cordate with rounded auricles, acuminate to a fine point, margins undulate; petioles 3 – 8 (– 12) cm, somewhat warted. Inflorescence of pedunculate, axillary cymes, often with only 2 fully developed flowers; peduncle relatively stout, 2 – 15 cm; bracteoles 1 – 3 mm, deltoid, fugacious; secondary peduncles 0.8 – 1.5 cm; pedicels mostly 20 – 30 mm, slightly swollen upwards; sepals subequal, 5 – 6 × 3 mm, oblong-lanceolate, acute, dark green with white margin; corolla 2.5 – 4 cm, funnelshaped, glabrous, tube white, yellowish inside, limb blue, c. 3 cm diam., unlobed. Capsule ovoid, 7 mm wide, 8 mm long, rostrate with a beak 3 – 5 mm long, glabrous; seeds 6 – 7 mm long, appearing glabrous but minutely tomentellous under a microscope.
Ipomoea maritima (Desr.) R. Br.
*Ipomoea martii Meisn.
Ipomoea maurandioides Meisn.
Key: Small-leaved plant of rock outcrops and dry cerrado; outer sepals smooth; corolla 4 – 6 cm long
Ipomoea maurandioides Meisn. (Meisner 1869: 275). Type: Brazil, Rio Grande do Sul, Porto Alegre, Sello 3619 (B†, image F!).
Trailing or twining herb from central tap root, stems glabrous to thinly pubescent. Leaves petiolate, 3 – 5 × 1 – 5 cm, narrowly ovate-deltoid, acute, sagittate or cordate, the auricles acute to obtuse (rarely rounded), green on both surfaces, glabrous (rarely thinly pubescent); petioles 1 – 2 (– 3.5) cm. Inflorescence of solitary, axillary, pedunculate flowers (rarely in 2 – 3-flowered cymes); peduncles 0.5 – 4.5; bracteoles minute, c. 1 mm long, deltoid, caducous; secondary peduncles (if present) 7 – 17 mm; pedicels 5 – 21 mm; sepals unequal, glabrous, outer 5 – 8 mm, broadly oblong-lanceolate or oblong-ovate, obtuse, greenish-scarious, 3-veined; inner 9 – 12 mm, oblong-oblanceolate, rounded and often mucronulate, with broad scarious margins. Corolla 4 – 6 cm, pink, funnel-shaped, glabrous, limb 3.5 – 4 cm diam., unlobed. Capsule 12 × 6 mm, ovoid, glabrous; seeds 6 × 2.5 mm, blackish, tomentellous.
*Ipomoea mauritiana Jacq.
!Ipomoea mauritiana Jacq.
Key: Leaves large, 5 – 14 × 6 – 16 cm; wetlands in tropical lowlands
Ipomoea mauritiana Jacq. (Jacquin 1790 [publ. 1791]: 216). Type: plant cultivated in Vienna, probably not preserved.
Ipomoea pedata G. Don (1838: 281). Type: Ecuador, Guayaquil, Ruiz & Pavon (lectotype MA 814670, designated here, isolectotype MA 814671).
Vigorous creeping or climbing perennial, stems somewhat woody, winged when old, glabrous. Leaves petiolate, 5 – 14 × 6 – 16 cm, 5-lobed to about two thirds, base shallowly cordate to truncate and cuneate onto the petiole, lobes elliptic, narrowed at both ends, apex obtuse, both surfaces glabrous, abaxially paler; petioles 2 – 6 cm, usually glabrous. Inflorescence of pedunculate axillary, occasionally compound cymes; peduncles 3 – 13 cm, glabrous or puberulent; bracteoles 6 mm, linear, caducous; secondary peduncles (if present), 5 – 15 mm; pedicels 5 – 22 mm, puberulent; calyx subglobose; sepals slightly unequal, elliptic, concave, coriaceous with a very narrow scarious margin, glabrous or puberulent near base, 7 – 10 × 5 – 6 mm, the outer obtuse, the inner rounded; corolla 5 – 6 cm, inflated above a narrow basal tube, pink, glabrous, limb c. 3 cm diam. Capsule 10 – 15 × 6 – 10 mm, ovoid, glabrous; seeds 6 mmlong, lanate.
Ipomoea maxima Don ex Sweet
Ipomoea mcvaughii McPherson
Ipomoea megapotamica Choisy
Key: Sepals tomentellous, often with a black gland near base
Ipomoea megapotamica Choisy (1845: 375). Type: “Uruguay” (possibly South Brazil fide O’Donell 1948: 182), Otto s.n. (syntype B, not found, presumably destroyed in 1943), neotype: Brazil, Mato Grosso do Sul, Terrenos, G. Hatschbach 23711 (NY0101991, designated here, isoneotypes F, MBM).
Ipomoea subalata Hassl. (Hassler 1911: 157), synon. nov. Type: Paraguay, San Luis, K. Fiebrig 4485 p.p. (holotype G00175183, isotype G00175182).
Twining perennial herb reaching 2 m, stems thinly pubescent to subglabrous. Leaves petiolate, 4 – 10 × 4 – 10 cm, broadly ovate, cordate, acute and apiculate, minutely scabridulous to thinly appressed pubescent on both surfaces, abaxially paler, often dark gland-dotted; petioles 2.5 – 5 cm. Inflorescence of long pedunculate,manyflowered, lax, compound cymes; peduncles 2.5 – 20 cm, glabrous to puberulent; bracteoles linear, 3 – 4 mm, caducous; secondary peduncles 1 – 5.5 cm; tertiary peduncles 1 – 1.5 cm; quaternary peduncles 0.5 – 1 cm; pedicels 3 – 5 mm long, puberulent; sepals 6 – 7 mm, ovate, acute, the apex erect (slightly bent backwards), concave, tomentellous, often dotted with dark glands; corolla 4.5 – 6 cm, pale pink with a darker centre, pubescent, funnel-shaped, limb 3 – 4 cmdiam.,unlobed. Capsule glabrous, style persistent in fruit; seeds not seen.
Ipomoea melanotricha Brandegee
Ipomoea mexicana A. Gray
Ipomoea meyeri (Spreng.) G. Don
Ipomoea microcalyx Schulze-Menz
Ipomoea microdactyla Griseb.
Ipomoea microsepala Benth.
Ipomoea minuta R.E. Fr.
Ipomoea minutiflora (M. Martens & Galeotti) House
Ipomoea miquihuanensis J.A. McDonald
Ipomoea mirandina (Pittier) O’Donell
Ipomoea mombassana Vatke
Ipomoea monosperma Sprengel ex Choisy
Ipomoea morongii Britton
Ipomoea muelleri Benth.
Ipomoea × multifida (Raf.) Shinners
*Ipomoea muricata Cav.
!Ipomoea muricata (L.) Jacq.
Key: Corolla lilac, gradually widened above basal cylindrical tube, stamens included; outer sepals 10 – 14 mm long including awn
Ipomoea muricata (L.) Jacq. (Jacquin 1798: 40).
Convolvulus muricatus L. (Linnaeus 1767: 44). Type: India, Broad s.n. (Linn 218.18, lectotype, designated by Verdcourt inHubbard&Milne-Redhead (1963: 130)).
Ipomoea turbinata Lag. (Lagasca y Segura 1816: Pl. 10), nom. illeg., superfluous.
Vigorous annual climbing or trailing plant; stems stout, armed with soft herbaceous spines. Leaves petiolate, 7 – 18 × 6 – 17 cm, ovate or, rarely, 3-lobed, cordate with rounded auricles, apex shortly acuminate, glabrous; petioles 3 – 15 cm. Inflorescence of 1 – 2 (– 5)-flowered, pedunculate cymes; peduncles 2.5 – 20 cm, usually long, but, if short, commonly with soft spines; bracteoles caducous; pedicels 1.5 – 4.5 cm, stout and strongly swollen upwards; sepals unequal, accrescent in fruit, glabrous, white with green midrib, outer 10 – 14 mm, narrowly ovate, attenuate into a point up to 7 mm long, inner 7 – 12 mm, broadly ovate, abruptly narrowed to an awn 3 – 4 mm long; corolla dark lilac, 5 – 6 cm long, glabrous, tube narrowly cylindrical below but widened to 10 mm below limb, limb c. 4 cm diam., spreading, unlobed. Capsule ovoid, 1.5 – 2 cm long and wide, glabrous, rostrate, the persistent style c. 3 mm long; seeds 8 – 10 mm long, glabrous.
Ipomoea muricata fo. alba Woodson & Seibert
Ipomoea murucoides Roem. & Schult.
Ipomoea mutabilis Ker Gawl.
Ipomoea nationis (Hook.) G. Nicholson
Ipomoea neei (Spreng.) O’Donell
Ipomoea neurocephala Hallier f.
Key: Bracteoles ovate, 7 – 24 mm wide, pale green with prominent dark veins forming an involucre round the flowers
Ipomoea neurocephala Hallier f. (Hallier 1899a: 40). Type: Bolivia, Sorata, G. Mandon 1489 (holotype B†; isotype K!)
Ipomoea sawyeri D. F. Austin (1991: 93), synon. nov. Type: Peru, Puno, F. de la Puente 3271 (holotype not received at US; isotypes FAU, now Fairchild FTG!, CIP in Lima!).
Twining, probably annual herb, stems hispid-pilose. Leaves petiolate, 2.5 – 7.5 × 2 – 8 cm, ovate, shallowly cordate and broadly cuneate onto the petiole, auricles rounded, apex shortly acuminate, both surfaces appressed pilose, abaxially paler; petioles 2 – 8 cm, hispid-pilose. Inflorescence of dense pedunculate axillary heads with 1 – 5 flowers; peduncles 2 – 12 cm, hispid-pilose; bracteoles 7 – 20 × 7 – 24 mm (but smaller inside head), ovate, acuminate, pale green with prominent dark green veins, persistent, forming an involucre around the flowers; pedicels 1 – 3mm; sepals long-pilose, dissimilar, outer 12 – 14 × 4 – 5 mm, ovate, acuminate to an obtuse apex, inner linear-lanceolate, 9 × 2 mm; corolla 2 – 3.5 (– 5) cm, pilose with very long hairs, narrowly funnel-shaped, tube pale with dark midpetaline bands, limb mauve, weakly lobed, c. 1.5 cm in diam. Capsule ovoid, glabrous, seeds minutely puberulent.
Ipomoea nil (L.) Roth
Key: Corolla pale blue; sepals 15 – 32 mm, tapering to a long linear point, densely pilose, especially near base
Ipomoea nil (L.) Roth (1797: 36).
Convolvulus nil L. (Linnaeus 1762: 219). Type: “Convolvulus caeruleus, hederaceo folio..”, Dillenius, Hort. Eltham. 1: 96, t. 80, f. 91 (1732), designated by Verdcourt (1957: 232 – 233).
Trailing or twining herb, stems roughly pilose. Leaves petiolate, 3 – 12 × 3 – 14 cm, 3-lobed, the lobes typically ovate, abruptly narrowed to an acute or very shortly acuminate apex, base cordate, thinly to densely pubescent on both surfaces, paler beneath; petioles 1.5 – 7 cm. Inflorescence of pedunculate axillary compact cymes, sometimes reduced to 1 – 2 flowers; peduncles 0.5 – 18 cm, usually pilose; bracteoles 3 –7mm, filiform, relatively persistent; secondary peduncles 3 – 8 mm; pedicels 3 – 10 mm; sepals 15 – 32 mm, lanceolate, tapering into a long linear point, densely pilose with bulbous-based hairs, especially near the base; corolla 3.5 – 4.5 cm, funnel-shaped, glabrous, tube white, limb blue, drying pink, 3 – 4 cm diam., unlobed. Capsule 7 – 10 × 6 mm, subglobose, glabrous, style slender, persistent; seeds puberulent.
!Ipomoea nitida Griseb.
Ipomoea nyctaginea var. cordifolia Choisy
*Ipomoea nymphaeifolia Griseb.
Ipomoea oblongata E. Mey. ex Choisy
!Ipomoea obscura (L.) Ker Gawl.
Ipomoea obscura var. obscura
Ipomoea obscura var. sagittifolia Verdc.
Ipomoea obtusata Griseb.
Ipomoea ochracea (Lindl.) G. Don
Ipomoea ochroleuca Span.
Ipomoea oenotherae Hallier f.
*Ipomoea oligantha Choisy
Ipomoea ophiodes Standl. & Steyerm.
Ipomoea opulifolia Rusby
Key: Leaf lobes gradually narrowed to a fine acuminate point; sepals and abaxial surface of leaves greysericeous
Ipomoea opulifolia Rusby (1899: 150). Type: Bolivia, H. H. Rusby 1999 (holotype NY).
Vigorous species 3 – 4 m high, stems relatively stout, adpressed pilose. Leaves petiolate, 5 – 14 × 4 – 16 cm, 3- lobed, cut to about half way, apex shortly acuminate and mucronate, base broadly cuneate to subtruncate with rounded auricles, central lobe slightly narrowed to base, adaxially punctate with hair bases and scattered hairs, abaxially softly adpressed silvery-grey pilose, usually gland-dotted; petioles 2 – 11 cm, pubescent. Inflorescence of lax pedunculate, axillary cymes; peduncles 2 – 10 cm, densely pubescent; bracteoles 2 mm, scale-like, silverypilose, caducous; secondary peduncles 1.5 cm; pedicels 7 – 8 mm, densely silvery-pilose; sepals slightly unequal, sericeous, outer 10 – 11 × 4 – 6 mm, ovate, acute, greysericeous, the inner sepals c. 6 mm wide. oblong-elliptic, rounded to truncate, the margin scarious and glabrous; corolla 7 – 8 cm long, funnel-shaped, mauve, sericeous, limb c. 4 cm diam. Capsule and seeds not known.
Ipomoea oranensis O’Donell
Key: Corolla funnel-shaped; stamens included
Ipomoea oranensis O’Donell (1948: 185). Type: Argentina, Salta, Dep. Orán, San Andrés, Pierotti 280 (holotype LIL!).
Ipomoea santacrucensis O’Donell (1952: 237). Type: Santa Cruz, Camiri, M. Cardenas 4258 (holotype LIL!; isotype US!).
Vigorous twining perennial, stems thinly to densely pubescent with stellate and simple hairs. Leaves petiolate, 4 – 15 × 2 – 9 cm, ovate-deltoid (rarely 3-lobed to half way), shortly acuminate and mucronate, base shallowly cordate to truncate and broadly cuneate onto the petiole, adaxially thinly pubescent, abaxially grey-tomentose; petioles 1 – 7 cm, tomentellous. Inflorescence of lax, axillary, often compound, pedunculate cymes; peduncles 3 – 11.5 cm, tomentose; bracteoles 5 – 10 mm, filiform, tomentose, caducous; secondary peduncles 1.5 – 2 cm; tertiary peduncles, slightly shorter; pedicels 0.5 – 2 cm, pubescent to tomentose; sepals coriaceous, somewhat unequal, outer sepals 6 – 11 × 5 – 7 mm, elliptic, obtuse, concave, entirely glabrous or pubescent in the lower half only, margins scarious; inner sepals 7.5 – 12 mm, slightly broader and rounded; corolla 4.5 – 7 cm, funnel-shaped, pink, glabrous, limb 4 – 5 cm diam., shallowly lobed. Capsule 14 – 15 × 12 – 13 mm, suborbicular, glabrous; seeds 7 × 4 mm, long-pilose.
Ipomoea orizabensis (G. Pelletan) Ledeb. ex Steud.
Ipomoea orizabensis var. collina (House) J.A. McDonald
Ipomoea orizabensis var. orizabensis
Ipomoea ornithopoda B.L. Rob.
Ipomoea ovata E. Mey. ex Rendle
Ipomoea padillae O’Donell
Ipomoea painteri House
Ipomoea palmata Forssk.
Ipomoea palmeri var. platyphylla Fernald
Ipomoea paludosa O’Donell
!Ipomoea pandurata (L.) G. Mey.
*Ipomoea paniculata (L.) R. Br.
Ipomoea paolii Chiov.
Ipomoea papilio Hallier f.
Ipomoea paraguariensis Peter
Ipomoea parasitica (Kunth) G. Don
Key: Sepals lacking white margins; corolla bluish with a white tube, lobed; stem often with fleshy teeth, never with corky bark
Ipomoea parasitica (Kunth) G. Don (1838: 275).
Convolvulus parasiticus Kunth (1818 [publ. 1819]: 103). Type: Venezuela, near Caracas, Humboldt & Bonpland s.n. (holotype P 00670753!).
Perennial twining herb to 7 m; stem rather stout and with scattered soft spines, branches rigid. Leaves petiolate, 3 – 10 × 2 – 9 cm, ovate, cordate with rounded auricles, apex finely acuminate, abaxially paler, usually adaxially thinly pubescent, sometimes glabrous; petioles 3 – 5 cm, puberulent. Inflorescence of pedunculate, axillary cymes; peduncles stout, 3 – 5 cm; bracteoles 3 mm, linear-lanceolate, caducous; secondary peduncles 4 – 6 mm; pedicels 15 – 22 mm, stout, thinly puberulent, spreading at a wide angle and often reflexed in fruit; sepals slightly unequal, broadly elliptic with wide scarious margins, outer 6 – 7 × 5 mm, obtuse and mucronate, abaxially with a few hairs, inner sepals similar but rounded and minutely mucronulate, glabrous; corolla sericeous in bud, 2.5 – 4 cm long, funnel-shaped, tube white outside, yellow inside, limb blue (drying pink), c. 3 cm diam., deeply lobed. Capsule 7 – 12 × 5 mm, glabrous, ovoid, acute above a small apical corona; seeds 6 – 7 mm, brown, glabrous.
Ipomoea pauciflora M. Martens & Galeotti
Ipomoea pauciflora subsp. vargasiana (O’Donell) McPherson
Ipomoea paulistana Stellfeld
Key: Leaves green, pubescent, imbricate, diminishing in size upward; corolla limb only weakly lobed
Ipomoea paulistana (Silva Manso) Stellfeld (1945: 86).
Convolvulus paulistanus Silva Manso (1836: 17). Type: not specified, Brazil, Mato Grosso, Cuyaba, Silva Manso & Lhotsky 32 (G 00135526, lectotype, designated here),
Ipomoea echioides Choisy (1838: 54), synon. nov. Type: Brazil. Mato Grosso, Serra-Nov, Silva Manso & Lhotsky 32 (syntype G 00135526).
Erect herb to c. 0.75 cm, usually unbranched, stems pubescent, often leafless below. Leaves sessile, numerous, imbricate, 0.5 – 6 (– 13) × 0.1 – 0.5 (– 1.2) cm, diminishing in size upwards, linear-oblong, base narrowly cuneate, apex acute, mucronate, margins commonly inrolled, both surfaces densely softly pilose or pubescent. Inflorescence terminal, ±racemose in appearance, up to 30 cm long, formed of cymes, which are often reduced to solitary flowers arising in the axils of the leaf-like bracts; peduncles 0 – 3 cm (often absent), erect; bracteoles 3 – 10 mm, linear, pilose, deciduous; pedicels 2 – 6 mm; sepals 5 – 7mm, subequal, elliptic, usually truncate, rigid, concave, the outer pubescent, acute, the inner subglabrous; corolla 5 – 6 cm, pink, funnel-shaped, glabrous, limb 3 – 4 cm diam., weakly lobed. Capsule globose, 4 – 5 mm diam., glabrous, apex shortly rostrate, the dead style remaining until the fruit matures; seeds c. 3 mm, long-pilose.
Ipomoea pearceana Kuntze
Ipomoea pedata Poiteau ex Choisy
Ipomoea pedatisecta M. Martens & Galeotti
Ipomoea pedicellaris Benth.
!Ipomoea peduncularis Bertol.
**Ipomoea pentaphylla (L.) Jacq.
Ipomoea peredoi O’Donell
Ipomoea perrieri Deroin
Ipomoea peruviana O’Donell
!Ipomoea pes-caprae (L.) R. Br.
Ipomoea pes-caprae subsp. brasiliensis (L.) Ooststr.
Ipomoea pes-caprae var. emarginata Hallier f.
Here after
Ipomoea pestigridis var. capitellata Cl.
Ipomoea pes-tigridis L.
Ipomoea pes-tigridis var. capitella Clarke
Ipomoea petaloidea Choisy
!Ipomoea philomega (Vell.) House
Key: Sepals 10 – 14 mm wide, commonly reddish-brown; corolla 5 – 6 cm, glabrous; inflorescence commonly muchbranched
Ipomoea philomega (Vell.) House (1908: 246).
Convolvulus philomega Vell. (Vellozo 1825 [publ. 1829]: 74). Type: Vellozo, Fl. Flumin. 2 t. 63 (1827 [publ. 1831]), lectotype, designated by D. Austin 1982).
Ipomoea cardiosepala Meisn. (Meisner 1869: 265). Type: Brazil, Rio de Janiero, Burchell 1865 (holotype BR, isotype K!).
Liana to 10 m; stems thick, woody, glabrous. Leaves petiolate, 7 – 13 × 7 – 12 cm, broadly ovate, shallowly cordate with rounded auricles, apex acute or shortly acuminate, shortly mucronate, adaxially glabrous, abaxially thinly pubescent, or glabrous; petioles 6 – 10 cm. Inflorescence of many-flowered, pedunculate axillary cymes, these often appearing paniculate or racemose with peduncle extended to forma central rhachis; peduncle 3 – 20 cm long, stout, glabrous; bracteoles 17 – 19 × 3 – 8 mm, oblong to narrowly obovate, acute, deciduous; secondary peduncles 1 – 3 cm; pedicels 5 – 30 mm, thickened upwards; sepals subequal, glabrous or (rarely) pubescent, 12 – 17 × 10 – 14 mm, outer oblong-elliptic, rounded, often reddish, inner obovate with scarious margins; corolla 5 – 6 cm, deep pink, glabrous, narrowly funnel-shaped with a narrow tube which is slightly constricted below limb, limb c. 4 cm diam., unlobed. Capsule ovoid, 13 × 10 mm, glabrous; seeds 6 × 3 mm, woolly.
*Ipomoea phyllomega House
Ipomoea pileata Roxb.
*Ipomoea pilosa Sweet
Ipomoea pinifolia Meisn.
Key: Leaves linear, 1 – 3 mm wide
Ipomoea pinifolia Meisn. (Meisner 1869: 250). Type: Brazil, Burchell 6700-7 (lectotype BR 0000005837731!, designated here, isolectotype K!).
Wiry perennial of cerrado, occasionally leafless, rootstock a xylopodium, stems glabrous, woody, often simple and erect to 1.5 m but sometimes branched and then branches spreading or twining apically. Leaves sessile, very variable in length 2 – 14 × 0.1 – 0.3 cm, linear-filiform, acute, glabrous. Inflorescence of 1 (– 5)-flowered axillary cymes from the upper leaf axils, sometimes clustered apically but more commonly forming a long narrow raceme-like inflorescence up to 30 cm long; peduncles 0 – 8 (– 21) mm, bracteoles caducous, scale-like, secondary peduncles (if present) up to 4 mm; pedicels 7 – 10 (– 15) mm; sepals coriaceous, concave, very unequal, outermost 2 – 6 mm, elliptic to suborbicular, obtuse to rounded, often minutelymucronate, inner 7 – 12mm, oblong to elliptic, obtuse to rounded, margins broad, scarious; corolla 3 – 4.5 mm, glabrous, pink, gradually widened from base, the limb 3 – 3.5 cm diam., undulate, the midpetaline bands ending in teeth. Capsule glabrous, seeds reported to be pilose.
Ipomoea piresii O’Donell
Ipomoea pittieri O’Donell
Ipomoea piurensis O’Donell
Ipomoea platensis Ker Gawl.
Ipomoea plebeia R. Br.
Ipomoea plebeia subsp. africana A. Meeuse
Ipomoea plummerae A. Gray
Key: Small, high altitude species with corm-like rootstock; sepals muricate
Key: Small high altitude species with corm-like rootstock; leaves often bi- or trilobed; corolla < 3 cm long
Ipomoea plummerae A. Gray (1886: 434). Type: United States, Arizona, Lemmon 2839 (holotype GH!)
Ipomoea minuta R. E. Fr. (Fries 1905: 113). Type: Argentina, Jujuy, Santa Catalina, Kurtz 11437 (lectotype S, designated by McDonald (1997: 111).
Completely glabrous perennial herb with subterranean bulb-like root tuber; stems usually several, branched near base, decumbent or ascending, up to 30 cm long but often very short. Leaves petiolate, small, digitately divided into 5 – 7 segments, segments 3 – 30 × 1 – 3 mm, linear to linear-oblanceolate, obtuse and mucronate or (less commonly) simple, rhomboidal, basally cuneate but apically acute or 3-fid with acute lobes; petioles 3 – 15 mm. Flowers solitary, axillary, peduncles 5 – 12 (– 40) mm; bracteoles 1 – 2 mm, filiform; pedicels 1 – 4 mm; sepals slightly unequal, outer 5.5. – 7 mm, oblong, acute to obtuse, muricate, inner similar but 7 –9mmand with broad scarious margins and green, central, sometimes muricate midrib; corolla 2 – 3 cm long, glabrous, funnelshaped; tube dirty white, limb dark pink, c. 2 cm diam., unlobed. Capsule 6 – 7 mm long, subglobose, glabrous, the slender style persistent, 6-seeded; seeds 3 – 4 mm, dark brown, minutely tomentellous.
Ipomoea plummerae var. cuneifolia (A. Gray) J.F. Macbr.
Ipomoea plummerae forma adiantifolia Ooststr. (Ooststroom 1933: 210). Type: Peru, Arequipa, A. Weberbauer 1561 (holotype B, n.v.)
Ipomoea minuta forma adiantifolia (Ooststr.) O’Donell (1959b: 193).
Ipomoea cuneifolia A. Gray (1886: 434), non I. cuneifolia Meisn. (Meisner 1869). Type: United States, Arizona, J. G. Lemmon 2837 (holotype GH!; isotypes CAS, F, MO, NY!, US!).
Ipomoea plummerae var. cuneifolia (A. Gray) J. F. Macbr. (Macbride 1931: 4).
Ipomoea plummerae forma rhombifolia Ooststr. (Ooststroom 1936: 221). Type: Bolivia, Potosi, Lagunillas, M. Cardenas 430 (lectotype US!, designated by McDonald (1995: 115).
Distinguished by rhomboidal leaves, 0.5 – 2 × 0.3 – 1.5 cm, basally cuneate but apically acute, entire, crenate or deeply 3 – 5-toothed or lobed. Usually growing with the type form but less common, only 14 of a total of 64 records of Ipomoea plummerae relate to this form.
Ipomoea plummerae var. plummerae
Ipomoea plummerae fo. rhombifolia Ooststr.
Ipomoea polpha R.W. Johnson
Ipomoea polyantha Miq.
Ipomoea polyanthes Roem. & Schult.
Ipomoea polymorpha Roem. & Schult.
Ipomoea polymorpha var. delphinioides Meisn.
Ipomoea populina House
Ipomoea praecana House
Ipomoea praematura Eckenw.
Ipomoea pringlei A. Gray
Ipomoea prismatosyphon Welw.
Ipomoea prismatosyphon var. prismatosyphon
Ipomoea prismatosyphon var. trifida Verdc.
Ipomoea procumbens Mart. & Choisy
Ipomoea procumbens var. longepedunculata Chodat & Hassl.
Key: Sepals smooth: leaves commonly < 1.5 cm wide
Ipomoea procumbens Mart. ex Choisy (1845: 351). Type: Brazil, Minas Gerais, Martius 593 (holotype M-0184989!).
Prostrate (or twining) herb, glabrous or nearly so in all parts, stems somewhat woody. Leaves shortly petiolate, 4 – 11 × 0.2 – 1.5 cm, narrowly oblong to oblong-elliptic or oblanceolate, acute, base attenuate, cuneate or broadly cuneate, petioles 5 – 10 mm. Inflorescence of solitary or paired, pedunculate, axillary flowers; peduncles 0.5 – 3.5 cm; bracteoles 2 mm, scale-like, caducous; pedicels 7 – 12 mm, thickened upwards; sepals unequal, scarious-margined, outer 9 – 11 mm, ovate or oblong-ovate, acute to obtuse andmucronate, inner 12 – 15 mm, oblong-elliptic, acute or obtuse; corolla 5.5 – 9 cm, funnel-shaped, gradually widened from a narrow base, pink, glabrous, limb unlobed, c. 3.5 cm diam. Capsule and seeds not seen.
Ipomoea procurrens Meisn.
Ipomoea procurrens Meisn. (Meisner 1869: 254). Type: Brazil, Minas Gerais, 1845, Widgren 302 (lectotype BR!, designated here, isolectotypes K!, R!, S).
Decumbent, ascending or erect plant with xylopodium, stems somewhat woody, glabrous or, especially on young stems, shortly pubescent. Leaves very shortly petiolate, ovate or broadly oblong, apex obtuse and mucronulate, base broadly cuneate to rounded, slightly asymmetric, both surfaces usually glabrous, veins prominent abaxially; petioles 3 – 8 mm. Inflorescence of pedunculate, 1 – 3-flowered cymes from upper leaf axils; peduncles 2 – 30 mm, glabrous to densely pubescent, bracteoles 4 – 5 mm, narrowly deltoid; pedicels 5 – 20 mm, longer than peduncles, sometimes muricate; sepals somewhat unequal, outer sepals 7 – 13 mm, lanceolate to ovate, acuminate to obtuse and mucronate, muricate; inner sepals 11 – 18 × 4 – 6 mm, lanceolate to ovate, obtuse and mucronate; corolla 6 – 7 cm, funnel-shaped, pink, glabrous, limb c. 5 cm diam., unlobed. Capsule and seeds not seen.
Ipomoea procurrens var. pilosula Chodat & Hassl.
Key: Sepals muricate; leaves commonly > 1.5 cm wide
Ipomoea pseudomarginata Deroin
Ipomoea pseudomina K. Schum.
Ipomoea pterygocaulos Choisy
Ipomoea pubescens Lam.
Key: Sepals ovate, cordate at base
Ipomoea pubescens Lam. (Lamarck 1793: 465). Type: America (holotype P-LAM, P00357477!).
Low trailing or twining herb with slender stems, pubescent in all parts, rootstock a carrot-shaped tuber. Leaves petiolate, 2 – 6 (– 8) × 2 – 6 cm, ovate or, usually in Bolivia, 3 – 5-lobed to near base, lobes oblongelliptic, narrowed at both ends, acute, shortly mucronate, laterals sometimes shallowly lobed near base, base cordate with rounded auricles, both surfaces densely pubescent; petioles 1 – 2 cm, pubescent. Inflorescence of solitary or, occasionally paired, axillary flowers; peduncles 1 – 4 cm, pubescent; bracteoles 4 – 8 mm long, linear, persistent, pubescent; pedicels 2 – 6 mm, pubescent; sepals unequal, grey-pubescent or pilose, outer 12 – 22 × 6 – 10 mm, ovate, acuminate, base cordate, inner lanceolate, 2 – 4 mm wide; corolla 4 – 5 cm, funnel-shaped, glabrous, tube flushed reddish, limb purplish, c. 2 cm diam., unlobed but midpetaline bands terminating in a tooth. Capsule subglose, 8 mm long, glabrous, enclosed by sepals, 3- locular, 6-seeded; seeds 4 mm long, minutely tomentellous.
Ipomoea pulcherrima Ooststr.
Ipomoea puncticulata Benth.
Ipomoea purga (Wender.) Hayne
!Ipomoea purpurea (L.) Roth
Ipomoea purpurea (L.) Roth (1787: 27).
Convolvulus purpureus L. (Linnaeus 1762: 219). Type: Dillenius, Hort. Eltham. 1: 100, t. 84, f. 97 (1732), designated by D. F. Austin (1975: 193).
Twining annual herb, stems pilose. Leaves petiolate, 3 – 8 (– 15) × 3.5 – 8 (– 14) cm, ovate (rarely 3-lobed to half way), shortly acuminate, cordate with rounded auricles, both surfaces thinly to densely hispid-pilose; petioles 3 – 15 cm, pilose. Inflorescence of 2 – 5- flowered, pedunculate, axillary cymes, often umbellate in form; peduncles 1.5 – 7 cm, pubescent; bracteoles 2 – 8 mm, filiform, relatively persistent, pedicels 0.5 – 1.8 cm, pubescent but pilose apically; sepals subequal, 11 – 17 × 2 – 3 mm, lanceolate to oblong-lanceolate, acuminate to subobtuse, hispid-pilose, more densely so in lower half, inner sepals with scarious margins; corolla 4 – 5 cm, funnel-shaped, tube white, limb usually pink, sometimes cream or bluish, glabrous, 4 cm diam., unlobed. Capsule subglobose, 9 – 11 mm, glabrous, 6-seeded; seeds 5 mm long, appearing glabrous but minutely tomentellous under a microscope.
Ipomoea purpurea var. diversifolia (Lindl.) O’Donell
Key: Corolla usually pink, rarely white or blue; sepals 11 – 17 mm, shortly acuminate to subobtuse, uniformly pilose
Ipomoea purpurea var. diversifolia (Lindl.) O’Donell (1953: 385).
Pharbitis diversifolia Lindl. (Lindley 1837: t. 1988). Type: Peru, Mathews 2050, portion at top right of sheet in Herb Lindley (CGE 06401 p.p.), lectotype, designated here, isolectotype OXF.
Ipomoea pusilla Brandegee
Ipomoea quamoclit L.
Key: Leaves pinnate
Ipomoea quamoclit L. (Linnaeus 1753: 159). Type: India, Herb. Clifford 66, Ipomoea 1 (BM -000558077), designated by Biju 2002 [publ. 2003]: 755)
Twining annual herb, plant completely glabrous. Leaves shortly petiolate, 1 – 7 (– 9) × 0.8 – 7 cm, ovate-elliptic in outline, deeply pinnatifid to the main vein, the segments linear, acute, mostly 8 – 15 pairs; petioles 0.5 – 3 (– 4.5) cm, often with pseudostipules at base. Inflorescence of 1 (– 5)-flowered axillary, pedunculate cymes; peduncles 1 – 5 (– 14) cm; bracteoles elliptic, c. 1 mm long; pedicels 8 – 20 mm, swollen upwards; sepals slightly unequal, oblong-elliptic, obtuse and very shortly mucronate, the mucro < 1 mm long, margins scarious, the outer 4 – 6 × 2 – 3 mm, the inner c. 1 mm longer; corolla usually red, hypocrateriform, the tube 2 – 3 cm long, widened upwards, the limb c. 2 cm diam., deeply lobed with acute lobes; stamens exserted. Capsule ovoid, 7 – 9 mm long, rostrate, glabrous; seeds c. 5 mm, rostrate with hairs in patches.
!Ipomoea quinquefolia L.
Ipomoea racemigera F. Muell.
Ipomoea ramosissima (Poir.) Choisy
Key: Capsule compressed, glabrous
Ipomoea ramosissima (Poir.) Choisy (1845: 377).
Convolvulus cymosus Ruiz & Pavon (1799: 9), non Desr. (Desrousseaux 1796). Type: Peru, Huánuco, Ruiz & Pavon s.n. (lectotype MA 814677, designated here; isolectotypes F, MA814678, MA814675, MA 814676, OXF).
Convolvulus ramosissimus Poir. (Poiret 1813 [publ. 1814]: 468).
Ipomoea dichotoma Choisy (1845: 383), nom. illeg., non I. dichotoma Kunth (1819). Type: Brazil, Lund 319 (holotype G00135826!).
Slender twining annual herb, usually nearly glabrous in all parts but occasionally stems thinly pilose. Leaves petiolate, mostly 3 – 5.5 × 2 – 4.5 cm, ovate or shallowly 3-lobed, cordate with rounded to obtuse auricles, apex shortly acuminate, mucronate, glabrous or adaxially with a few hairs; petioles 1.5 – 5 cm, glabrous or thinly pubescent. Inflorescence of long pedunculate axillary umbelliform cymes with 2 – 5 flowers; peduncles 2 – 10 cm; bracteoles tiny, triangular, caducous; pedicels 5 – 15 mm; sepals subequal, oblong-obovate with broad scarious margins, rounded and mucronate, glabrous or with a few marginal cilia, outer sepals 3.5 – 6 mm, inner sepals c. 1mmlonger; corolla 1.5 – 2.5 cm, funnel-shaped, pink with a dark centre, glabrous, limb 1.5 – 1.75 cm diam., unlobed or shallowly lobed, sometimes dentate. Capsule 2 – 3 × 4 mm, depressed-subglobose, enclosed by sepals, glabrous, the slender style somewhat persistent; seeds 3 × 2.5 mm, ellipsoid, dark brown, glabrous or pilose on the angles.
Ipomoea ramosissima fo. rosea (Hallier) O’Donell
Ipomoea regnellii Meisn.
Key: Inner sepals 9 – 12 mm long, longer than outer sepals; peduncles 1 – 5.5 cm long
Ipomoea regnellii Meisn. (Meisner 1869: 266). Type: Brazil, Minas Gerais, Caldas, A. F. Regnell (lectotype BR!, designated by O’Donell 1952: 236).
Twining perennial herb, stems thinly pubescent to densely pilose. Leaves petiolate, 4 – 15 × 3 – 12 cm, ovate, cordate with rounded auricles, shortly acuminate to an obtuse and mucronate apex, adaxially thinly puberulent to subtomentose, abaxially weakly to densely tomentose; petioles 1.5 – 11 cm, thinly pubescent to tomentose. Inflorescence of shortly pedunculate axillary, many-flowered umbellate cymes, peduncles 1 – 5.5 cm; bracteoles 1.5 – 2 mm, lanceolate, caducous; secondary peduncles 6 – 8 mm; pedicels 8 – 30 mm, relatively long; sepals unequal, lanceolate, obtuse and broadly mucronate, pale green, thinly to densely pubescent, outer 7 – 11 × 1 – 3 mm, margins often ciliate, the inner 9 – 12 × 3 – 4 mm, often with scarious margins; corolla 5 – 8 cm, funnel-shaped, pink, densely short-pubescent, limb c. 4 cm diam. Capsule ellipsoid, 11 – 12 × 7 – 8 mm, rostrate, glabrous; seeds 6 mm, pubescent (immature).
Ipomoea repanda Jacq.
Ipomoea repens Roth
**Ipomoea reptans Poir.
Ipomoea reticulata O’Donell
Key: Corolla cream with a dark centre; inflorescence commonly developing into a paniculate or racemose structure
Ipomoea reticulata O’Donell (1953: 389). Type: Colombia, Norte de Santander, J. Cuatrecasas 13321 (holotype LIL!, isotype F).
Ipomoea peredoi O’Donell (1960: 44), synon. nov. Type: Bolivia, Santa Cruz, I. Peredo s.n. (holotype LIL 158045!).
Weak liana to 3 m, stems woody, glabrous to minutely scabridulous, dotted with black glands. Leaves petiolate, 4 – 9 × 3 – 6 cm, ovate to suborbicular, cordate with rounded auricles, shortly acuminate, usually glabrous but sometimes scabridulous-puberulent, abaxially often minutely black-punctate; petioles 2.5 – 5 cm, scabridulous. Inflorescence of pedunculate axillary cymes, these often developing into a raceme or panicle like structure 5 – 10 cm long; peduncles 1 – 4.5 cm, sometimes extended into a rhachis up to 3 cm long; secondary peduncles 0.5 – 1.8 cm long; bracteoles scale-like, caducous; pedicels very variable in length. 5 – 15 mm long, glabrous; sepals subequal, 5 – 7 × 3 – 5 mm, elliptic, obtuse, scarious-margined, inner obovate with very broad scariousmargins; corolla 2.3 – 3.5 cm, creamywhite with greenishmidpetaline bands and (sometimes a dull violet centre), campanulate, glabrous, limb 2.5 cm diam., undulate; stamens held at corolla mouth. Capsule ovoid, 10 – 12 × 7 – 8 mm, glabrous; seeds 5 mm long, pilose.
Ipomoea retropilosa (Pittier) D.F. Austin
Ipomoea rhodocalyx A. Gray
Ipomoea riparia G. Don
Ipomoea riparum Standl. & L.O. Williams
Ipomoea robinsonii House
Ipomoea rojasii Hassl.
Ipomoea rosea Choisy
Ipomoea rubella House
Ipomoea rubens Choisy
Key: Sepals with spreading hairs; leaf lobes acute
Key: Bracteoles caducous; corolla 5 cm long
Ipomoea rubens Choisy (1834: 463). Type: India, Wallich 1421 (lectotype G 00227258, designated here, isolectotypes G, K-W).
Ipomoea riparia G. Don (1838: 265). Type: São Tome, Guinea, (probable holotype BM).
Ipomoea villicalyx N. E. Br. (Brown 1894: 64). Type: Paraguay, Gibert (holotype K)
Twining perennial herb, stems tomentose, to several metres high. Leaves petiolate, 4 – 8 × 3 – 5 cm, ovatedeltoid, often shallowly 3-lobed, cordate with rounded auricles, apex acute, adaxially pubescent, abaxially grey-tomentose; petioles 2 – 4 cm, grey-tomentose. Inflorescence of compact, axillary, pedunculate cymes; peduncles 3 – 12 cm, densely woolly-pilose; bracteoles 3 – 7 mm, linear, caducous; secondary peduncles (if present) 2 – 3 mm; pedicels 5 – 17 mm, pilose; sepals somewhat unequal, outer (8 –) 10 – 14 mm, accrescent to 16 mm in fruit, ovate-deltoid, acute (or obtuse), pilose, inner sepals 8 – 12 mm, obtuse, pilose, margins scarious; corolla 4 – 5.5 cm, funnel-shaped, pink, sericeous-pubescent, limb 4 – 5 cm diam. Capsule globose, 8 – 13 × 11 – 12 mm, enclosed by sepals, glabrous; seeds 5 – 6 mm long, pilose.
!Ipomoea rubra (Vahl) Millsp.
Ipomoea rubriflora O’Donell
Key: Fruiting pedicels erect; leaves commonly lobed
Ipomoea rubriflora O’Donell (1959a: 79). Type: Argentina, Cordoba, Dep. San Alberto, entre Mina Clavero y Nono, O’Donell & Rodríguez 708 (holotype LIL!).
Similar to Ipomoea hederifolia in habit, variability of leaf shape and general features of the inflorescence but more robust, the stems distinctly angled, glabrous except at nodes. Leaves usually glabrous or nearly so; sepals glabrous or pubescent, outer sepals oblong-obovate, 3 – 4 mm; inner sepals 5 – 6 mm, corolla limb 2 – 3 cm diam., stamens very shortly exserted. Capsule strongly rostrate terminatterminating in a persistent mucro 3 – 5 mm long, the fruiting pedicel erect; seeds tomentose with hairs unequal in length those bordering the central groove longer.
Ipomoea rupicola House
!Ipomoea sagittata Poir.
__*Ipomoea sagittata Lam.__
Ipomoea sagittula House
Ipomoea saintronanensis R.W. Johnson
Ipomoea santillanii O’Donell
Ipomoea saopaulista O’Donell
Ipomoea scabra Forssk.
Ipomoea schomburgkii Choisy
Key: Leaves linear, < 3 mm wide; plant glabrous
Ipomoea schomburgkii Choisy (1845: 354). Type: Guyana, R. Schomburgk 692 (holotype K000612791!).
Ipomoea graminiformis Meisn. (Meisner 1869: 250). Type: Brazil, Goyaz, Burchell 8556 (holotype BR000005305780!; isotype K000612790!).
Glabrous perennial herb with xylopodium and erect, somewhat succulent stems to 50 cm. Leaves sessile, 4 – 16 × 0.1 – 3 cm, linear, somewhat glaucous, tapering at both ends, acute. Inflorescence ± terminal, up to 30 cm long, but usually much less, formed of pedunculate cymes from the uppermost leaf axils; peduncles 0 – 5 cm, diminishing in size upwards; bracteoles filiform, up to 10 mm long, caducous; pedicels 5 – 13 mm; sepals subequal, coriaceous, somewhat concave, 5 – 7 × 3 – 4 mm, elliptic, outer acute to obtuse, c. 1 mm shorter than inner, inner rounded, slightly scarious on margins; corolla c. 4.5 cm long, pink with a darker centre, glabrous, limb weakly lobed, c. 4 cm diam. Capsule and seeds not seen.
Ipomoea schulziana O’Donell
Key: Leaf base truncate to weakly cordate or plant leafless when flowering
Ipomoea schulziana O’Donell (1948: 186). Type: Argentina, Salta, Oran, San Pedrito, senda a Astillero, Schulz 5483 (holotype LIL107492!).
Robust twining liana reaching at least 6 m in height, commonly leafless when flowering, roots tuberous, stems glabrous. Leaves petiolate, mostly 3 – 8 × 1.5 – 4 cm, oblong-ovate, acute and mucronate, basally broadly cordate to truncate, margin slightly undulate, glabrous, adaxially green, abaxially somewhat glaucous and with prominent veins; petioles 1 – 3.5 cm. Inflorescence of axillary, pedunculate simple or compound cymes often developing on axillary branchlets, sometimes very dense and floriferous or panicle-like; peduncles 0.5 – 5 cm long; bracteoles caducous, not seen; secondary peduncles 0.5 – 2.5 cm; pedicels 3 – 8 mm, thickened upwards; sepals slightly unequal, coriaceous, glabrous, outer sepals 5 – 6 mm, concave, elliptic, obtuse with scarious margins, the inner 7 – 8 mm, suborbicular, rounded; corolla 5 – 6.5 cm, pink, glabrous, funnel-shaped, limb c. 3 cm diam., unlobed. Capsule glabrous, seeds pilose on the angles.
Ipomoea scopulorum Brandegee
Ipomoea seaania Felger & D.F. Austin
Ipomoea seducta House
!!Ipomoea semisagitata Griseb. ex Peter
Ipomoea sepacuitensis Donn. Sm.
Ipomoea sepiaria Koenig ex Roxb.
!Ipomoea sericophylla Meisn.
Ipomoea serpens Meisn.
Ipomoea sescossiana Baill.
!Ipomoea setifera Poir.
Key: Perennial; bracteoles 16 – 25 mm wide; corolla 5 – 8 cm long
Ipomoea setifera Poir. (Poiret 1804: 17). Type: Guyana, Brocheton s.n. (holotype P-JU, n.v.).
Trailing or twining herb, stems often roughly hirsute with stiff hairs. Leaves petiolate, 3 – 9 × 2 – 5 cm, ovate-deltoid or subreniform with wide-spreading obtuse or rounded auricles, base broadly cordate, apex obtuse, emarginate and mucronate, less commonly acute or acuminate, glabrous, lower surface paler, reticulate-veined; petioles 1 – 6 cm, glabrous but often with scattered tubercles. Inflorescence of pedunculate, 1 – 3 (– 5)-flowered, axillary cymes peduncles (0.3 –) 3 – 5 (– 8) cm, sometimes tubercled; bracteoles 1.2 – 2 × 0.6 – 1.5 cm, ovate, longmucronate, persistent, pale green, concave, concealing the pedicel bases; pedicels 8 – 28 mm; sepals unequal, glabrous, outer sepals 1.5 – 2 cm, elliptic, acute, finely aristate, abaxially 5-winged, wings smooth or, often, softly tubercled, inner sepals c. 5 mm shorter, ovate, pale, unwinged; corolla 5.5 – 8 cm, funnel-shaped, pink, glabrous, limb c. 4 cm diam., unlobed. Capsule ovoid, c. 12 mm long and wide, seeds tomentellous.
!Ipomoea setosa Ker Gawl.
Key: Stem armed with numerous soft fleshy spines
Ipomoea setosa Ker-Gawl. (Ker Gawler 1818: 335). Type: Ker Gawler, Bot. Reg. 4: t. 335, designated by A. Mcdonald (1994: 110).
Ipomoea pavonii Choisy (1845: 390). Type: Ecuador, Guayaquil, Pavon s.n. (holotype G n.v.; isotypes MA814625, MA814626, MA814627).
Calonyction pavonii Hallier (1897: 1048).
Ipomoea setosa var. pavonii (Choisy) House (1908: 220).
Ipomoea horrida Huber ex Ducke (1959: 304). Type: Brazil, Ceará, Ducke 1151 (holotype MG, isotype F).
Scrambling perennial herb, stems with soft fleshy spines and bluish-green bloom but otherwise glabrous. Leaves petiolate, 10 – 32 × 10 – 32 cm, mostly 3-lobed to about halfway but sometimes ovate-orbicular, apex shortly acuminate, obtuse and mucronate, base cordate with rounded auricles, margin irregularly dentate with scattered teeth, both surfaces glabrous; petioles 5 – 14 cm, armed with soft fleshy spines. Flowers in longpedunculate axillary cymes; peduncles 5 – 15 cm, armed with soft fleshy spines; bracteoles 5 – 10 × 2 mm, oblong, mucronate, caducous; secondary peduncles 1.5 – 3 cm; pedicels 1 – 4 cm, markedly thickened upwards, armed with soft fleshy spines below, glabrous upwards, often purplish-brown; sepals subequal, 8 – 10 mm at anthesis (accrescent to 16 mm in fruit), ovate, acute, concave, glabrous (or in central America with soft fleshy spines), purplish-brown with scarious margins; corolla 4 – 5 (– 6) cm long, funnel-shaped, pink, glabrous, limb c. 2.5 cm diam. Capsule subglobose, 15 mm long, glabrous; seeds 7 × 5 mm, woolly, nearly black.
Ipomoea shirambensis Baker
Ipomoea shumardiana (Torr.) Shinners
Ipomoea shupangensis Baker
!Ipomoea sidaefolia (Kunth) Sweet
Ipomoea silvicola House
Ipomoea simonsiana Rendle
Ipomoea simplex auct. non Thunb.
Ipomoea simulans D. Hanb.
Ipomoea sindica Stapf
Ipomoea sinensis (Desr.) Choisy
Ipomoea sinensis subsp. blepharosepala (Hochst. ex A. Rich.) Verdc. ex A. Meeuse
Ipomoea sinuata Ortega
Ipomoea × sloteri (House) Ooststr.
Ipomoea soluta Kerr
Ipomoea soluta var. alba C.Y. Wu
Ipomoea sororia D.F. Austin & Tapia-Muñoz
Ipomoea spectata J.A. McDonald
Ipomoea splendor-sylvae House
Ipomoea squamisepala O’Donell
Key: Leaves oblong, 4 – 6 mm or more wide
Ipomoea squamisepala O’Donell (1950b: 453).
Ipomoea angulata Mart. ex Choisy (1845: 371), non I. angulata Lam. (Lamarck 1793). Type: Brazil, Pohl 1646 (holotype M).
Erect undershrub from a xylopodium to c. 1 m, stems very woody, somewhat ridged, glabrous; plant drying blackish. Leaves shortly petiolate, (2 –) 4 – 6 × (0.2 –) 0.5 – 1.5 (– 3) cm. linear-oblong, oblong-elliptic or oblanceolate, obtuse to acute and apiculate, cuneate at base, glabrous; petioles 0 – 5 mm, poorly defined. Inflorescence racemose, terminal, typically elongate to 40 cm, sometimes branched but sometimes much reduced, often dense, formed of shortly pedunculate cymes from the upper leaf axils; peduncles 0 – 1.5 cm, erect; bracteoles fugacious (not seen); secondary peduncles c. 2 cm, often rhachis-like, pedicels 3 – 8 mm; sepals very unequal, obovate-elliptic, rigid, glabrous, outer 2 – 4 × 2 mm long, obtuse, white-margined, inner 5 – 7 × 3 – 4 mm, rounded, margins scarious; corolla 2 – 4 cm, funnelshaped, white or lilac, glabrous, limb c. 2.5 – 3 cm diam. Capsule and seeds not seen.
Ipomoea squamosa Choisy
Key: Outer sepal 3 – 5 mm long; leaves usually pubescent abaxially
Ipomoea squamosa Choisy (1845: 376). Type: Brazil, Para, Martius 76 (holotype P, n.v., isotype M).
Convolvulus mattogrossensis Kuntze (1898: 214). Type: Brazil, Mato Grosso, Villa Maria, O. Kuntze s.n. (isotype NY!).
Ipomoea mattogrossensis (Kuntze) K. Schum. (Schumann 1900: 383).
Twining perennial herb or small liana, stems glabrous to thinly pubescent. Leaves petiolate, ovate, shortly acuminate, cordate with rounded to obtuse auricles, glabrous except on the veins to subtomentose (var. villosa Ooststr.) on both surfaces, abaxially paler, prominently veined; petioles 3 – 6 (– 12) cm, usually pubescent. Inflorescence of many-flowered pedunculate axillary cymes, the cymes often dense with shortly pedicellate, undeveloped flowers on the lateral branches; peduncles 4 – 12 cm, straight, usually pubescent; bracteoles 2 – 3 mm, ovate, caducous; secondary peduncles 4 – 16 mm; pedicels 4 – 15 mm, noticeably more slender than peduncles, glabrous; sepals unequal, glabrous, scariousmargined, accrescent in fruit, at anthesis outer 4 – 6 × 3 – 5 mm, obovate to suborbicular, obtuse, inner 7 – 10 × 5 – 8 mm, obovate to broadly elliptic, rounded, often nearly completely scarious; corolla 5.5 – 6.5 cm, funnel-shaped, pink with dark centre, glabrous, limb 4.5 cm diam., undulate. Capsule 10 – 12 × 10 – 12 mm, broadly ovoid to subglobose, rostrate, glabrous; seeds woolly with long hairs.
Ipomoea stans Cav.
Ipomoea stans var. hirsuta B.L. Rob.
Ipomoea staphylina Roem. & Schult.
Ipomoea steerei (Standl.) L.O. Williams
Ipomoea stellaris Baker
Ipomoea stenobasis Brenan
Ipomoea stenophylla Meisn.
Ipomoea steudelii Millsp.
Ipomoea stolonifera (Cirillo) J.F. Gmel.
Ipomoea stuckertii O’Donell
Ipomoea suaveolens (M. Martens & Galeotti) Hemsl.
Ipomoea subincana (Choisy) Meisn.
Ipomoea subrevoluta Choisy
Key: Sepals apiculate, 5 – 6 mm long; leaflets linear to narrowly oblong
Ipomoea subrevoluta Choisy (1845: 386). Type: Guyana, C. S. Parker s.n. in Herb. Lindley (holotype CGE 14419!; isotypes K!).
Twining perennial herb, completely glabrous in all parts. Leaves petiolate, divided into 5 (– 7) separate sessile leaflets, leaflets 2. 5 – 6 × 0.1 – 0.4 (– 0.7) cm, linear to narrowly oblong, apiculate, acuminate at base; petioles 0.5 – 5 cm. Inflorescence of 1 (– 3)-flowered, axillary, pedunculate cymes; peduncles slender, 0.8 – 1.8 cm, often flexuose; bracteoles 1.5 mm, deltoid, caducous; pedicels 1 – 1.5 cm, stouter than peduncles; sepals subequal, 5 – 6 × 2 – 3 mm, ovate, shortly apiculate, pale green; corolla 4 – 6 cm, funnel-shaped, pink, glabrous, limb c. 4 cm diam., unlobed. Capsule 12 – 14 cm long, ovoid, glabrous; seeds 5 – 6 mm, dark brown, nearly glabrous.
Ipomoea subtomentosa (Chodat & Hassl.) O’Donell
Ipomoea maurandioides var. subtomentosa (Chodat & Hassl.) J. R. I. Wood & R. W. Scotland, comb. et stat. nov.
Basionym: Ipomoea serpens Meisn. var. subtomentosa Chodat & Hassl., Bull. Herb. Boiss. Ser. 2, 5: 694 (Chodat & Hassler 1905). Type: Paraguay, E. Hassler 6109 (holotype G, isotype BM000089475!).
Ipomoea subtomentosa (Chodat & Hassl.) O’Donell (1953: 239).
Differs from var. maurandioides in the minutely pubescent leaves, petioles, stems and peduncles, and (reportedly) in the more rounded capsules. A few Bolivian specimens are ± pubescent and resemble the type and other collections from Paraguay determined by O’Donell as Ipomoea subtomentosa but they are never as hirsute as some Brazilian examples, such as Harley 21280 (K) or Sano et al. 14538 (K). They do not seem to be anything more than minor variants of I. maurandioides.
Ipomoea suburceolata O’Donell
Key: Corolla suburceolate, the limb reduced to 5 small teeth
Ipomoea suburceolata O’Donell (1953: 394). Type: Bolivia, “Caupolican”, fide note on sheet at Kew, Pearce 779 (holotype K)
Liana, glabrous in all parts, stems pale brown, woody. Leaves 4 – 9 × 4 – 8 cm, ovate, acute, base cordate to subtruncate, glabrous, abaxially paler, gland-dotted with pale whitish glands. Inflorescence of small cymes, often aggregated into a terminal panicle-like inflorescence; bracts resembling small leaves; peduncles 1.3 – 2 cm; secondary peduncles 10 – 15 mm; bracteoles 2 – 3 mm, oblong-ovate, obtuse, deciduous; pedicels 5 – 10 mm; sepals reddish, slightly unequal, outer 6 – 7 mm, ovate, obtuse, inner 8 – 9 mm, narrowly obovate with scarious margin; corolla 3.5 – 4 cm, tubular but somewhat inflated in the middle to 10 – 12 mm, fuchsia-red, limb 5–lobed, 4 – 5 mm long, dark red; stamens shortly exserted. Capsule 10 – 12 × 5 mm, ovoid, style persistent; seeds oblong in outline, c. 5 × 2 mm, long-pilose.
Ipomoea suffulta (Kunth) G. Don
!Ipomoea sulphurea (La Llave & Lex.) G. Don
Ipomoea sultanii Chiov.
Ipomoea sumatrana (Miq.) Ooststr.
*Ipomoea syringaefolia Baker
!Ipomoea syringifolia Meisn.
Ipomoea tabascana J.A. McDonald & D.F. Austin
Ipomoea tarijensis O’Donell
Key: Stamens c. 2.5 cm long; leaf auricles overlapping; pedicels scurfy-puberulent; plant decumbent
Ipomoea tarijensis O’Donell (1960: 53). Type: Bolivia, Tarija, 1904, K. Fiebrig 2655A (holotype BM!, isotypes K!, P!).
Trailing herb, stems up to 2 m long, thinly pubescent. Leaves petiolate, 5 – 11 × 5 – 11 cm, ovate to suborbicular, narrowly cordate with rounded, overlapping auricles, apex shortly acuminate, adaxially almost glabrous, abaxially bluish-grey with prominent, raised veins, scurfy-pubescent; petioles 3 – 6 cm, thinly pubescent. Inflorescence of long-pedunculate, 1 – 3 (– 5)- flowered, axillary cymes, peduncles 7 – 15 cm, straight; bracteoles caducous; secondary peduncles 0.5 – 1.6 cm; pedicels 0.5 – 2.5 cm, scurfy-pubescent, slightly widened below calyx, often fracturing at summit; sepals subequal, 7 – 9 × 4 – 5 mm, broadly oblong, obtuse, thinly scurfy-puberulent, margins scarious, glabrous, inner c. 1 mm longer and broader with broad scarious margins; corolla 4.5 – 5 cm long, shortly funnel-shaped being flared from just above basal tube, glabrous, pale pink, limb c. 5 cm in diam., distinctly lobed with rounded lobes, stamens held at corolla mouth. Capsule ovoid, 2 cm long, shortly rostrate, glabrous; seeds 6 mm long, densely lanate.
Ipomoea tehuantepecensis L. Torres, R. Torres, M.P. Ramírez & J.A. McDonald
Ipomoea temascaltepecensis Wilkin
Ipomoea tentaculifera Greenm.
Ipomoea tenuifolia (Vahl) Urb.
Ipomoea tenuiloba Torr.
Ipomoea tenuiloba var. lemmonii (A. Gray) Yatsk. & C.T. Mason
Ipomoea tenuirostris Choisy
Ipomoea tenuirostris subsp. tenuirostris
Ipomoea tenuis E. Mey.
Ipomoea tenuissima Choisy
Ipomoea teotitlanica McPherson
Ipomoea ternifolia Cav.
Ipomoea ternifolia var. leptotoma (Torr.) J.A. McDonald
Ipomoea ternifolia var. ternifolia
Ipomoea theodori O’Donell
Ipomoea thurberi A. Gray
Ipomoea ticcopa Verdc.
Ipomoea tiliacea (Willd.) Choisy
Ipomoea trematosperma Hochst. ex Choisy
Ipomoea trichocarpa Elliott
Ipomoea trichocarpa var. australis O’Donell
Ipomoea tricolor Cav.
Key: Corolla 5 – 7.5 cm long (Cultivated species)
Ipomoea tricolor Cav. (Cavanilles 1795: 5). Type: [cultivated plant from Mexico], Cavanilles s.n. (holotype MA 475860).
Twining annual herb, glabrous in all parts, stems robust and often thick (4 – 5 mm broad). Leaves petiolate, 3 – 12 × 2 – 10 cm, ovate, cordate with rather angular, nearly rounded auricles, apex acuminate, both surfaces glabrous; petioles 1.5 – 11 cm. Inflorescence of pedunculate, few-flowered axillary cymes; peduncles 3 – 20 cm, bracteoles 1 – 2 mm, oblanceolate, early caducous; secondary peduncles 0.5 – 2.5 cm, pedicels 1.5 – 3 cm, spreading at a wide angle; sepals subequal, 5 – 7 × 3 mm, oblong-lanceolate, acute, dark green with white margin, inner slightly longer than the outer; corolla 5 – 7.5 cm, funnel-shaped, glabrous, tube white, yellowish inside, limb blue, 4 cm diam. Capsule 10 × 6 mm, ovoid, glabrous, rostrate; seeds 7 × 3 mm, blackish, appearing glabrous but minutely tomentellous under a microscope.
Ipomoea tridentata (L.) Roth
Ipomoea trifida (Kunth) G. Don
Ipomoea trifida var. berlandieri A. Gray
Ipomoea triloba L.
Ipomoea trinervia Schulze-Menz
Ipomoea tuba (Schltdl.) G. Don
Ipomoea tubata Nees
Ipomoea tuberosa L.
Ipomoea tuboides O. Deg. & Ooststr.
!Ipomoea tuerckheimii Vatke ex Donn. Sm.
*Ipomoea turbinata Lag.
Ipomoea turneroides Chodat & Hassl.
Ipomoea turpethum (L.) R. Br.
Ipomoea tuxtlensis House
*Ipomoea umbellata (L.) G. Mey.
Ipomoea uncinata Hutch.
Ipomoea urbaniana (Dammer) Hallier f.
Ipomoea urbinei House
Ipomoea ursina Brandegee
Ipomoea valenzulensis Chodat & Hassl.
Ipomoea valerii Standl. & L.O. Williams
Ipomoea vargasiana O’Donell
Ipomoea variabilis (Schltdl. & Cham.) Choisy
Ipomoea velardei O’Donell
Ipomoea velutipes Welw. ex Rendle
Ipomoea venosa (Desr.) Roem. & Schult.
Ipomoea venosa subsp. stellaris (Baker) Verdc.
Ipomoea venosa subsp. venosa
Ipomoea verbascoidea Choisy
!Ipomoea verbascoidea Choisy
Ipomoea verrucisepala Verdc.
*Ipomoea versicolor Meisn.
Ipomoea villifera House
!Ipomoea villosa Ruiz & Pav.
Ipomoea violacea L.
Ipomoea virgata Meisn.
Key: Leaves ovate to elliptic, abaxially white-floccose; sepals 8 – 12 mm long
Ipomoea virgata Meisn. (Meisner 1869: 241). Type: Brazil, Minas Gerais, Regnell III 192 (lectotype BR 0000005305797!, designated here, isolectotype, K000612808!)
Ascending or erect undershrub from a woody xylopodium, stems woody, somewhat lanate. Leaves sessile, 3 – 7 × 2.5 – 5 cm, broadly ovate to narrowly elliptic, obtuse and apiculate, broadly cuneate at base, adaxially pubescent, abaxially whitish-floccose. Inflorescence of lax axillary cymes, forming an elongate terminal raceme, often somewhat compound below with branches to 7 cm in length; peduncles 1 – 4.5 cm, villous; bracteoles lanceolate, acuminate, caducous; pedicels 5 – 8 mm; sepals subequal, 8 – 12 mm, ovate, acute, grey-tomentose; corolla 3 – 6 cm, subcampanulate to broadly funnel-shaped, white(?), densely pilose with appressed hairs, limb 2.5 – 3.5 cm diam. Capsule (immature) 6 – 7 × 3 – 4 mm, narrowly ovoid, glabrous.
Ipomoea viridiflora Urb.
Ipomoea vitifolia (Burm. f.) Blume
Ipomoea vivianae Krapov.
Key: Sepals with white margins; corolla white, sometimes with pink centre, unlobed; stem with corky bark, lacking fleshy teeth
Ipomoea vivianae Krapov. (Krapovickas 2009: 57). Type: Argentina, Salta, Dep. Rivadavia, Pluma del Pato, 13 Feb. 2005, V. Solis Neffa, J. G. Seijo, J. G. Grabiele & W. Reynoso 1985 (holotype CTES!, isotypes LIL!, SI).
Twining perennial to at least 3 m, stems glabrous or sparsely pubescent when young, becoming woody with corky bark when old. Leaves petiolate, 2 – 4 × 2.5 – 5.5 cm, broadly ovate to subreniform, abruptly acuminate, shallowly cordate, glabrous or very thinly pubescent, abaxially somewhat paler; petioles 2 – 4 cm, slender. Inflorescence of shortly pedunculate axillary cymes, often raceme-like on short side branches; peduncles short, 1 – 2 cm, commonly somewhat woody; bracteoles 2 mm, caducous; secondary peduncles 5 – 10mm; pedicels 10 – 16 mm; sepals subequal, outer 6 – 8 × 3 – 4 mm, ovate-elliptic, subacute, thinly pubescent, inner sepals c. 1 mm longer, rounded, the central part pubescent but with glabrous scarious margins; corolla 4 – 5 cm, funnel-shaped, white, sometimes with pink centre, pubescent in bud and on midpetaline bands, limb 3 – 4 cm diam., unlobed. Capsule ovoid, 8 × 6 mm, glabrous, rostrate, the style base persistent; seeds 5 mm long, long-pilose.
Ipomoea volcanensis O’Donell
Ipomoea wallii (C. Morren) Hemsl.
Ipomoea wangii C.Y. Wu
Ipomoea welwitschii Vatke ex Hallier f.
Ipomoea wightii (Wall.) Choisy
Ipomoea wightii var. kilimandschari (Dammer) Verdc.
Ipomoea wightii var. obtusisepala Verdc.
Ipomoea wightii var. wightii
Ipomoea wolcottiana Rose
Ipomoea wolcottiana subsp. wolcottiana
!Ipomoea wrightii A. Gray
Key: Annual herb; corolla < 2.2 cm long; peduncles usually twisted or coiled
Ipomoea wrightii A. Gray (1878: 213). Type: United States, Texas, Wright s.n. (holotype GH!).
Ipomoea gracilipes Hassler (1911: 158). Type: Paraguay, zwischen Río Apa und Río Aquidaban, K. Fiebrig 5744 (holotype G; isotype K000612826!).
Ipomoea pulchella auct., non Roth (1821), which is I. cairica (L.) Sweet (Verdcourt 1961).
Twining annual herb, plant completely glabrous in all parts. Leaves petiolate, divided into 5 – 7 separate sessile leaflets, leaflets 3 –7×0.3– 1 cm, narrowly lanceolate, acuminate at both ends; petioles 2.5 – 5.5 cm. Flowers solitary (rarely paired), axillary, pedunculate; peduncles slender, flexuose and sometimes coiled, 3 – 6 cm long; bracteoles minute, c. 1 mm, scale-like, caducous; pedicels 5 – 8mm, stouter than peduncles; sepals subequal, 5 – 7 mm, scariousmargined, outer 4 – 5 × 2.5 – 3 mm, ovate, obtuse, abaxially slightly muricate, inner 5 – 6 × 3 mm, broadly oblong, rounded; corolla 1.7 – 2.2 cm long, funnelshaped, pink, glabrous; limb c. 1 cm diam. Capsule 10 × 7 mm, ovoid, glabrous; seeds 5 × 2.5 mm, tomentose.
Ipomoea yaracuyensis J.R. Grande & W. Meier
Ipomoea yardiensis A.S. George & Tate
Ipomoea zanzibarica Verdc.
Note that the symbols in front of the latin names. ! = Legitimate, * = Illegitimate, ** = Invalid, *** = nom. rej., !! = nom. cons.
Specimen coordinates in square brackets [ ] have been approximated based on political units.
Ipomoea Check List
| Scientific Name | Author | Reference | Date |
|---|---|---|---|
| Ipomoea | L. | Sp. Pl. 1: 159 | 1753 |
| Ipomoea sect. Acmostemon | (Pilg.) Verdc. | Taxon 6: 152 | 1957 |
| Ipomoea subsect. Aequisepalae | House | Ann. New York Acad. Sci. 18(6): 249 | 1908 |
| Ipomoea sect. Aniseia | (Choisy) Gagnep. & Courchet | Fl. Indo-Chine 4: 231 | 1915 |
| Ipomoea subg. Aniseia | (Choisy) Clarke | Fl. Brit. India 4: 200 | 1883 |
| Ipomoea ser. Anisomerae | (House) D.F. Austin | Taxon 29(4): 502 | 1980 |
| Ipomoea subsect. Anisomerae | House | Ann. New York Acad. Sci. 18(6): 242 | 1908 |
| Ipomoea ser. Arborescentes | (Choisy) D.F. Austin | Taxon 29(4): 502 | 1980 |
| Ipomoea subsect. Arborescentes | Choisy | Prodr. 9: 358 | 1845 |
| Ipomoea subsect. Argyrophyllae | Baker & Rendle | Fl. Trop. Afr. 4(2): 135 | 1905 |
| Ipomoea sect. Batatas | (Choisy) Griseb. | Fl. Brit. W. I. 468 | 1864 or 1862 |
| Ipomoea ser. Batatas | (Choisy) D.F. Austin | Taxon 45(1): 13 | 1996 |
| Ipomoea subg. Batatas | (Choisy) C.B. Clarke | Fl. Brit. India 4: 201 | 1883 |
| Ipomoea ser. Bombocospermum | (C. Presl) D.F. Austin | Taxon 29(4): 502 | 1980 |
| Ipomoea subsect. Bombycospermae | (C. Presl) House | Ann. New York Acad. Sci. 18(6): 220 | 1908 |
| Ipomoea sect. Calonyction | (Choisy) Griseb. | Fl. Brit. W. I. 466 | 1864 or 1862 |
| Ipomoea subg. Calonyction | (Choisy) C.B. Clarke | Fl. Brit. India 4: 197 | 1883 |
| Ipomoea subsect. Calonyction | (Choisy) Hallier f. | Meded. Rijks-Herb. 46: 19 | 1922 |
| Ipomoea sect. Calycanthemum | Hallier f. | Bot. Jahrb. Syst. 18: 123 | 1893 |
| Ipomoea sect. Cephalanthae | (Choisy) Baker & Rendle | Fl. Trop. Afr. 4(2): 131 | 1905 |
| Ipomoea subsect. Cephalanthae | Hallier f. | Bot. Jahrb. Syst. 18: 131 | 1893 |
| Ipomoea subsect. Cephalanthae | Choisy | Prodr. 9: 363 | 1845 |
| Ipomoea subsect. Chorisanthae | Hallier f. | Bot. Jahrb. Syst. 18: 135 | 1893 |
| Ipomoea subsect. Cissoides | House | Ann. New York Acad. Sci. 18(6): 205 | 1908 |
| Ipomoea ser. Dactylophyllae | (House) D.F. Austin | Taxon 29(4): 502 | 1980 |
| Ipomoea subsect. Dactylophyllae | House | Ann. New York Acad. Sci. 18(6): 215 | 1908 |
| Ipomoea sect. Dasychaetia | Hallier f. | Bot. Jahrb. Syst. 18: 130 | 1893 |
| Ipomoea subsect. Emeticae | House | Ann. New York Acad. Sci. 18(6): 239 | 1908 |
| Ipomoea sect. Eriospermum | Hallier f. | Bot. Jahrb. Syst. 18: 149 | 1893 |
| Ipomoea ser. Eriospermum | (Hallier f.) D.F. Austin | Taxon 29(4): 502 | 1980 |
| Ipomoea subg. Eriospermum | (Hallier f.) Verdc. | Taxon 6: 152 | 1957 |
| Ipomoea sect. Erpipomoea | Choisy | Mém. Soc. Phys. Genève 6: 444 | 1833 |
| Ipomoea subsect. Erpipomoea | House | Ann. New York Acad. Sci. 18(6): 210 | 1908 |
| Ipomoea subsect. Eu-leiocalyx | Ooststr. | Blumea 3: 519 | 1940 |
| Ipomoea sect. Exogonium | (Choisy) Griseb. | Fl. Brit. W. I. 472 | 1864 or 1862 |
| Ipomoea subg. Exogonium | (Choisy) Meisn. | Fl. Bras. 7: 221 | 1869 |
| Ipomoea subsect. Hederaceae | House | ||
| Ipomoea ser. Heterophyllae | (House) D.F. Austin | Taxon 29(4): 501 | 1980 |
| Ipomoea subsect. Heterophyllae | House | Ann. New York Acad. Sci. 18: 194 | 1908 |
| Ipomoea sect. Involucratae | Baker & Rendle | Fl. Trop. Afr. 4(2): 130 | 1905 |
| Ipomoea ser. Involucratae | (Baker & Rendle) D.F. Austin | Taxon 29(4): 501 | 1980 |
| Ipomoea sect. Ipomoea | |||
| Ipomoea ser. Ipomoea | |||
| Ipomoea subg. Ipomoea | |||
| Ipomoea subsect. Ipomoea | |||
| Ipomoea ser. Jalapae | (House) D.F. Austin | Taxon 29(4): 502 | 1980 |
| Ipomoea subsect. Jalapae | House | Ann. New York Acad. Sci. 18(6): 224 | 1908 |
| Ipomoea sect. Leiocalyx | Hall. f | Fl. Trop. Afr. 4(2): 132 | 1905 |
| Ipomoea sect. Leiocalyx | Hallier f. | Bot. Jahrb. Syst. 18: 139 | 1893 |
| Ipomoea sect. Leptocallis | (G. Don) J.A. McDonald | Harvard Pap. Bot. 6: 99 | 1995 |
| Ipomoea ser. Microsepalae | (House) D.F. Austin | Taxon 29(4): 501 | 1980 |
| Ipomoea subsect. Microsepalae | House | Ann. New York Acad. Sci. 18(6): 238 | 1908 |
| Ipomoea sect. Mina | (Cerv.) Griseb. | Fl. Brit. W. I. 472 | 1864 or 1862 |
| Ipomoea ser. Mirandinae | D.F. Austin | Taxon 28(4): 360 | 1979 |
| Ipomoea sect. Orthipomoea | Choisy | Prodr. 9: 353 | 1845 |
| Ipomoea ser. Orthipomoea | (Choisy) D.F. Austin | Taxon 29(4): 501 | 1980 |
| Ipomoea subsect. Palmate | House | Ann. New York Acad. Sci. 18(6): 221 | 1908 |
| Ipomoea ser. Pedatisectae | (House) D.F. Austin | Taxon 29(4): 501 | 1980 |
| Ipomoea subsect. Pedatisectae | House | Ann. New York Acad. Sci. 18(6): 232 | 1908 |
| Ipomoea sect. Pes-caprae | Griseb. | Fl. Brit. W. I. 470 | 1864 or 1862 |
| Ipomoea sect. Pharbitis | (Choisy) Griseb. | Fl. Brit. W. I. 473 | 1864 or 1862 |
| Ipomoea sect. Pharbitis | Hallier f. | Bot. Jahrb. Syst. 18: 131 | 1893 |
| Ipomoea ser. Pharbitis | (Choisy) D.F. Austin | Taxon 29(4): 501 | 1980 |
| Ipomoea subg. Pharbitis | (Choisy) C.B. Clarke | Fl. Brit. India 4: 119 | 1883 |
| Ipomoea sect. Poliothamnus | (Hallier f.) Verdc. | Taxon 6: 151 | 1957 |
| Ipomoea sect. Quamoclit | (Mill.) Griseb. | Fl. Brit. W. I. 472 | 1864 or 1862 |
| Ipomoea subg. Quamoclit | (Mill.) C.B. Clarke | Fl. Brit. India 4: 198 | 1883 |
| Ipomoea subsect. Quamoclit | (Mill.) Hallier f. | Meded. Rijks-Herb. 46: 20 | 1922 |
| Ipomoea ser. Setosae | (House) D.F. Austin | Taxon 29(4): 502 | 1980 |
| Ipomoea subsect. Setosae | House | Ann. New York Acad. Sci. 18(6): 219 | 1908 |
| Ipomoea ser. Suffruticosae | (Choisy) D.F. Austin | Taxon 29(4): 502 | 1980 |
| Ipomoea subsect. Suffruticosae | Choisy | Prodr. 9: 353 | 1845 |
| Ipomoea sect. Tricolores | J.A. McDonald | ||
| Ipomoea ser. Tyrianthinae | (House) D.F. Austin | Taxon 29(4): 501 | 1980 |
| Ipomoea subsect. Tyrianthinae | House | Ann. New York Acad. Sci. 18(6): 206 | 1908 |
| Ipomoea sect. Xanthips | Griseb. | Fl. Brit. W. I. 470 | 1864 or 1862 |
| Ipomoea sect. Xerophyta | (Baker & Rendle) D.F. Austin | Taxon 29(4): 251 | 1980 |
| Ipomoea subg. Xerophyta | Baker & Rendle | Fl. Trop. Afr. 4(2): 194 | 1906 |
| Ipomoea abutiloides | (Kunth) G. Don | Gen. Hist. 4: 273 | 1838 |
| Ipomoea abutiloides var. abutiloides | |||
| Ipomoea abutiloides var. hartwegiana | Kuntze | Revis. Gen. Pl. 2: 444 | 1891 |
| Ipomoea abutiloides var. kunthiana | Kuntze | ||
| Ipomoea abyssinica | (Choisy) Schweinf. | Beitr. Fl. Aethiop. 94 | 1867 |
| Ipomoea acanthocarpa | (Choisy) Asch. & Schweinf. | Beitr. Fl. Aethiop. 277 | 1867 |
| Ipomoea acaponetensis | M.E. Jones | Contr. W. Bot. 18: 65 | 1933 |
| Ipomoea acetosellifolia | (Desr.) Choisy | ||
| Ipomoea acetosifolia | (Vahl) Roem. & Schult. | Syst. Veg. (ed. 15 bis) 4: 246 | 1819 |
| Ipomoea acetosifolia var. longifolia | Glaz. | ||
| Ipomoea aculeata | (L.) Kuntze | Revis. Gen. Pl. 2: 442 | 1891 |
| Ipomoea aculeata | Blume | Bijdr. Fl. Ned. Ind. 13: 715 | 1825 |
| Ipomoea aculeata var. aculeata | |||
| Ipomoea aculeata fo. bonanox | (L.) Voss | ||
| Ipomoea aculeata var. bonanox | (L.) Kuntze | ||
| Ipomoea aculeata var. bona-nox | (L.) Kuntze | Revis. Gen. Pl. 2: 442 | 1891 |
| Ipomoea aculeata var. mollissima | (Zoll.) Hallier f. ex Ooststr. | Blumea 3(3): 574 | 1940 |
| Ipomoea acuminata | Ruiz & Pav. | Fl. Peruv. 2: , t. 120, f. b | 1799 |
| Ipomoea acuminata | (Vahl) Roem. & Schult. | Syst. Veg. (ed. 15 bis) 4: 228 | 1819 |
| Ipomoea acutangula | Ruiz & Pav. | Fl. Peruv. 2: 10, t. 119, f. b | 1799 |
| Ipomoea acutisepala | O’Donell | Lilloa 23: 478, t. 8 | 1950 |
| Ipomoea adenioides | Schinz | ||
| Ipomoea adumbrata | Rendle & Britten | ||
| Ipomoea aegyptia | L. | Sp. Pl. 1: 162 | 1753 |
| Ipomoea aequitans | Jones | ||
| Ipomoea affinis | M. Martens & Galeotti | Bull. Acad. Roy. Sci. Bruxelles 12(2): 263 | 1845 |
| Ipomoea afra | Choisy | Prodr. 9: 380 | 1845 |
| Ipomoea afzelii | Choisy | ||
| Ipomoea aitoni | Choisy | ||
| Ipomoea aitonii | Lindl. | Edwards’s Bot. Reg. 21, t. 1794 | 1836 |
| Ipomoea alata | Rose | Contr. U.S. Nation. Herb. 1: 108 | 1891 |
| Ipomoea alata | R. Br. | Prodr. 484 | 1810 |
| Ipomoea alatipes | Hook. f. | Bot. Mag. 88: t. 5330 | 1862 |
| Ipomoea alba | L. | Sp. Pl. 1: 161 | 1753 |
| Ipomoea alba | Garcke | 1849 | |
| Ipomoea albidiflora | Matuda | Cact. Suc. Mex. 18(3): 78, f. 38?9 | 1973 |
| Ipomoea albiflora | Moric. | Pl. Nouv. Amer. 114, t. 70 | 1838 |
| Ipomoea albiflora var. albiflora | |||
| Ipomoea albiflora var. cinera | Meisn. | Fl. Bras. 7: 231 | 1869 |
| Ipomoea albiflora var. divergens | Choisy | Prodr. 9: 352 | 1845 |
| Ipomoea albiflora var. stricta | Choisy | Prodr. 9: 352 | 1845 |
| Ipomoea albivenia | Sweet | Hort. Brit. (ed. 2) 372 | 1830 |
| Ipomoea alexandrae | D.F. Austin | Fl. Ecuador 15: 36 | 1982 |
| Ipomoea alpina | Rendle | J. Bot. 50: 253 | 1912 |
| Ipomoea alterniflora | Griseb. | Cat. Pl. Cub. 202 | 1866 |
| Ipomoea altissima | (Spreng.) Bertero ex G. Don | Gen. Hist. 4: 273 | 1838 |
| Ipomoea altissima | Mart. ex Choisy | Prodr. 9: 359 | 1845 |
| Ipomoea altissima | Bertero ex Spreng. | Syst. Veg. [Sprengel_] 1: 613 | 1825 or 1824 |
| Ipomoea altoparanaensis | O’Donell | Arq. Mus. Paranaense 9: 210, t. 3 | 1952 |
| Ipomoea alulata | Miq. | Linnaea 18: 599 | 1844 or 1845 |
| Ipomoea ambigua | Endl. | ||
| Ipomoea amnicola | Morong | Ann. New York Acad. Sci. 7: 170 | 1892 |
| Ipomoea amoena | Choisy | Prodr. 9: 365 | 1845 |
| Ipomoea amoena | Blume | Bijdr. Fl. Ned. Ind. 718 | 1985 |
| Ipomoea amoenula | Dandy | Fl. Pl. Anglo-Egyptian Sudan 3: 112 | 1956 |
| Ipomoea amparoana | Pilg. | Repert. Spec. Nov. Regni Veg. 17(48185): 125 | 1921 |
| Ipomoea ampelopsifolia | (Cham. & Schltdl.) G. Don | Gen. Hist. 4: 278 | 1838 |
| Ipomoea amplexicaulis | Fernald | Bot. Gaz. 20(12): 535 | 1895 |
| Ipomoea ampliata | Choisy | Prodr. 9: 361 | 1845 |
| Ipomoea ampullacea | Fernald | Proc. Amer. Acad. Arts 33(5): 89 | 1897 |
| Ipomoea anceps | (L.) Roem. & Schult. | Syst. Veg. (ed. 15 bis) 4: 231 | 1819 |
| Ipomoea ancisa | House | Ann. New York Acad. Sci. 18(6): 187 | 1908 |
| Ipomoea androyensis | Deroin | Bull. Mus. Natl. Hist. Nat., B, Adansonia, s閞. 4 14(3?): 338?40, f. 3, 5(map) | 1992 or 1993 |
| Ipomoea angularis | Willd. | Ges. Naturf. Freunde Berlin Neue Schriften 4: 197 | 1803 |
| Ipomoea angularis | Choisy | 1834 | |
| Ipomoea angulata | Lam. | Tabl. Encycl. 1: 464 | 1791 |
| Ipomoea angulata | Ortega | Nov. Pl. Descr. Dec. 7?: 83 | 1797 |
| Ipomoea angulata | Mart. ex Choisy | 1845 | |
| Ipomoea angulata var. angulata | |||
| Ipomoea angulata var. gnidioides | Meisn. | ||
| Ipomoea angulata var. latifolia | Meisn. | ||
| Ipomoea angulata var. linearis | Meisn. | ||
| Ipomoea angustata | Brandegee | Univ. Calif. Publ. Bot. 4(19): 383 | 1913 |
| Ipomoea angustifolia | Choisy | 1845 | |
| Ipomoea angustifolia | Jacq. | Collectanea 2: 367 | 1788 |
| Ipomoea angustifolia var. villosula | Meisn. | ||
| Ipomoea angustisecta | Engl. | Bot. Jahrb. Syst. 10: 245 | 1888 |
| Ipomoea angustisepala | O’Donell | Lilloa 26: 362, t. 2, f. 2 | 1953 |
| Ipomoea anisomeres | B.L. Rob. & Bartlett | Proc. Amer. Acad. Arts 43(2): 57 | 1908 or 1907 |
| Ipomoea anisomeres var. anisomeres | |||
| Ipomoea anisomeres var. sagittiformis | L.O. Williams | Fieldiana, Bot. 32(12): 185 | 1970 |
| Ipomoea antillana | Millsp. | Publ. Field Columb. Mus., Bot. Ser. 2(1): 84?5 | 1900 |
| Ipomoea aphylla | Standl. | Publ. Field Mus. Nat. Hist., Bot. Ser. 11(4): 139 | 1932 |
| Ipomoea apiculata | M. Martens & Galeotti | Bull. Acad. Roy. Sci. Bruxelles 12(2): 262 | 1845 |
| Ipomoea aprica | House | Ann. New York Acad. Sci. 18: 243 | 1908 |
| Ipomoea aquatica | Forssk. | Fl. Aegypt.-Arab. 44 | 1775 |
| Ipomoea arachnoidea | Bojer | Hortus Maurit. 228 | 1837 |
| Ipomoea arachnosperma | Welw. | Apont. 588 | 1859 |
| Ipomoea arborescens | (Humb. & Bonpl. ex Willd.) G. Don | Gen. Hist. 4: 267 | 1838 |
| Ipomoea arborescens var. arborescens | |||
| Ipomoea arborescens var. glabrata | Gentry | ||
| Ipomoea arborescens var. pachylutea | Gentry | ||
| Ipomoea ardissima | A. Chev. | Rev. Int. Bot. Appl. Agric. Trop. 30: 272 | 1950 |
| Ipomoea arenaria | Roem. & Schult. | 1819 | |
| Ipomoea arenaria | (Choisy) Steud. | Nomencl. Bot. (ed. 2) 815 | 1841 |
| Ipomoea arenaria var. arenaria | |||
| Ipomoea arenaria var. integrrima | Kuntze | ||
| Ipomoea arenaria var. palmatifida | Kuntze | ||
| Ipomoea argentaurata | Hallier f. | Bot. Jahrb. Syst. 18: 132 | 1893 |
| Ipomoea argentea | Meisn. | Fl. Bras. 7: 247 | 1869 |
| Ipomoea argentifolia | A. Rich. ex Sagra | Hist. F韘. Cuba, Bot. 11: 131 | 1850 |
| Ipomoea argentina | N.E. Br. | Trans. Bot. Soc. Edinburgh 20: 62 | 1893 |
| Ipomoea argentinensis | Speg. | Physis (Buenos Aires) 3: 331 | 1917 |
| Ipomoea argentinica | Peter | Nat. Pflanzenfam. 4(3a): 30 | 1891 |
| Ipomoea argillicola | R.W. Johnson | ||
| Ipomoea argyreia | Meisn. | Fl. Bras. 7: 246 | 1869 |
| Ipomoea argyreia var. argyreia | |||
| Ipomoea argyreia var. burchellii | Hassl. | ||
| Ipomoea argyreia var. discolor | Hassl. | ||
| Ipomoea argyreia fo. grandiflora | Chodat & Hassl. | Bull. Herb. Boissier, sér. 2, 5: 689 | 1905 |
| Ipomoea argyreia fo. intermedia | Chodat & Hassl. | Bull. Herb. Boissier, sér. 2, 5: 689 | 1905 |
| Ipomoea argyreia var. lanata | Hassl. | ||
| Ipomoea argyreia fo. linearifolia | Hassl. | ||
| Ipomoea argyreia var. martii | Hassl. | ||
| Ipomoea argyreia var. nitens | Hassl. | ||
| Ipomoea argyreia fo. oblongifolia | Hassl. | ||
| Ipomoea argyreia fo. paraguariensis | (Peter) Chodat & Hassl. | ||
| Ipomoea argyreia var. paraguariensis | (Peter) Chodat & Hassl. | Bull. Herb. Boissier, sér. 2, 5: 689 | 1905 |
| Ipomoea argyreia fo. salicifolia | Chodat & Hassl. | Bull. Herb. Boissier, sér. 2, 5: 689 | 1905 |
| Ipomoea argyreoides | Choisy | ||
| Ipomoea aristolochiifolia | G. Don | Gen. Hist. 4: 277 | 1838 |
| Ipomoea aristulata | M. Martens & Galeotti | Bull. Acad. Roy. Sci. Bruxelles 12(2): 263 | 1845 |
| Ipomoea armata | Roem. & Schult. | Syst. Veg. (ed. 15 bis) 4: 214 | 1819 |
| Ipomoea armata var. patens | (A. Gray) M.E. Jones | Contr. W. Bot. 12: 53 | 1908 |
| Ipomoea armentalis | L.O. Williams | Fieldiana, Bot. 32(12): 185 | 1970 |
| Ipomoea arnoldsonii | Urb. | Symb. Antill. 9: 424 | 1925 |
| Ipomoea asarifolia | (Desr.) Roem. & Schult. | Syst. Veg. (ed. 15 bis) 4: 251 | 1819 |
| Ipomoea aspera | (Choisy) Vatke | Linnaea 43: 508 | 1882 |
| Ipomoea aspericaulis | Baker | ||
| Ipomoea asperifolia | Hallier f. | Bot. Jahrb. Syst. 18: 128 | 1893 |
| Ipomoea asplundii | O’Donell | Arq. Mus. Paranaense 9: 211, t. 4 | 1952 |
| Ipomoea assumptionis | Morong | Ann. New York Acad. Sci. 7: 170 | 1892 |
| Ipomoea astrotrichota | Dammer | ||
| Ipomoea atherstonei | Baker | ||
| Ipomoea atropurpurea | (Wall.) Choisy | Mém. Soc. Phys. Genève 6: 457 | 1833 |
| Ipomoea atrosanguinea | Hook. | Curtis’s Bot. Mag. 47: , t. 2170 | 1820 |
| Ipomoea aturensis | (Kunth) G. Don | Gen. Hist. 4: 226 | 1838 |
| Ipomoea aurantiaca | L.O. Williams | Fieldiana, Bot. 32(12): 187 | 1970 |
| Ipomoea aurea | Kellogg ex Curran | Bull. Calif. Acad. Sci. 1(3): 143 | 1885 |
| Ipomoea auricoma | A. Rich. | Tent. Fl. Abyss. 2: 67 | 1850 |
| Ipomoea aurifolia | Dammer | ||
| Ipomoea aurita | Hassl. | Pl. Hassl. (Addenda) 18 | 1917 |
| Ipomoea aurita | (Willd. ex Roem. & Schult.) G. Don | Gen. Hist. 4: 282 | 1837 |
| Ipomoea austin-smithii | Standl. | Publ. Field Mus. Nat. Hist., Bot. Ser. 18(4): 566 | 1938 |
| Ipomoea avicola | D.F. Austin | Ann. Missouri Bot. Gard. 64(2): 337 | 1977 or 1978 |
| Ipomoea baclii | Choisy | 60, t. 2 | 1838 |
| Ipomoea bahiensis | Willd. ex Roem. & Schult. | Syst. Veg. (ed. 15 bis) 4: 789 | 1819 |
| Ipomoea bahiensis var. sagittifolia | Meisn. | Fl. Bras. 7: 269 | 1869 |
| Ipomoea bahiensis var. uniflora | Meisn. | ||
| Ipomoea balansae | Peter | ||
| Ipomoea balioclada | Urb. | Symb. Antill. 9: 245 | 1924 |
| Ipomoea barbatisepala | A. Gray | Syn. Fl. N. Amer. (ed. 2) 1: 212 | 1886 |
| Ipomoea barbigera | Sweet | Brit. Fl. Gard. 1: t. 86 | 1823 |
| Ipomoea barlerioides | (Choisy) Benth. ex C.B. Clarke | Fl. Brit. India 4: 201 | 1883 |
| Ipomoea barrettii | Rendle | ||
| Ipomoea barteri | A. Chev. | Explor. Bot. Afrique Occ. Franc. 453 | 1920 |
| Ipomoea barteri | Baker | Bull. Misc. Inform. Kew 1894: 70 | 1894 |
| Ipomoea bartletti | Standl. | ||
| Ipomoea batatas | (L.) Poir. | Encycl. 6(1): 14 | 1804 |
| Ipomoea batatas | (L.) Lam. | Tabl. Encycl. 1: 465 | 1793 |
| Ipomoea batatas var. apiculata | (M. Martens & Galeotti) J.A. McDonald & D.F. Austin | Brittonia 42(2): 118 | 1990 |
| Ipomoea batatas var. edulis | (Thunb.) Makino | Fl. Japan 476 | 1927 |
| Ipomoea batatas var. leucantha | (Jacq.) Nishiyama | Bot. Mag. (Tokyo) 84(996): 385 | 1971 |
| Ipomoea batatas var. littoralis | (Blume) Nishiyama | Bot. Mag. 84: 385 | 1971 |
| Ipomoea batatas var. lobata | Gagnep. & Courchet | ||
| Ipomoea batatas var. porphyrorhiza | Griseb. | Fl. Brit. W. I. 468 | 1864 or 1862 |
| Ipomoea batatas fo. trifida | Moldenke | Phytologia 2: 224 | 1947 |
| Ipomoea batatilla | (Kunth) G. Don | Gen. Hist. 4: 275 | 1838 |
| Ipomoea batatoides | Choisy | Mém. Soc. Phys. Genève 8(1): 58?9 | 1838 or 1837 |
| Ipomoea batatoides | Benth. | Pl. Hartw. 46 | 1840 |
| Ipomoea bathycolpos | |||
| Ipomoea bathycolpos var. bathycolpos | Hallier f. | ||
| Ipomoea bathycolpos var. sinuatodentata | Hallier f. | ||
| Ipomoea beladamboe | Roem. & Schult. | Syst. Veg. (ed. 15 bis) 4: 233 | 1819 |
| Ipomoea bellecomans | Rendle | ||
| Ipomoea benghalensis | Roem. & Schult. | Syst. Veg. (ed. 15 bis) 4: 229 | 1819 |
| Ipomoea beraviensis | Vatke | Linnaea 43: 514 | 1882 |
| Ipomoea bernoulliana | Peter | Nat. Pflanzenfam. IV(3a): 30 | 1897 or 1891 |
| Ipomoea beyeriana | Urb. | Symb. Antill. 9: 425 | 1925 |
| Ipomoea biflora | (L.) Pers. | Syn. Pl. 1: 183 | 1805 |
| Ipomoea biglandulosa | Arechav. | An. Mus. Nac. Montevideo 7: 204 | 1909 |
| Ipomoea bignonioides | Sims | Bot. Mag. , t. 2645 | |
| Ipomoea biloba | Forssk. | Fl. Aegypt.-Arab. 44 | 1775 |
| Ipomoea biloba | Baker & Rendle | Fl. Trop. Afr. 4(2): 215 | |
| Ipomoea bilobata | (Roxb.) G. Don | Hort. Brit. (ed. 3) 483 | 1839 |
| Ipomoea bilobata var. emarginata | (Hallier f.) R.O. Williams | Bull. Herb. Boissier, sér. 2, 5: 438 | 1905 |
| Ipomoea bipinnatipartita | Engl. | ||
| Ipomoea bisavium | A. Meeuse | ||
| Ipomoea blanchetii | Choisy | Prodr. 9: 387 | |
| Ipomoea blancoi | Choisy | Prodr. 9: 389 | 1845 |
| Ipomoea blepharophylla | Hallier f. | Bot. Jahrb. Syst. 18: 125 | 1893 |
| Ipomoea blepharosepala | Hochst. ex A. Rich. | Tent. Fl. Abyss. 2: 72 | 1857 |
| Ipomoea bogotensis | (Kunth) G. Don | Gen. Hist. 4: 273 | 1838 |
| Ipomoea boisiana | Gagnep. | Notul. Syst. (Paris) 3: 141 | 1915 |
| Ipomoea boisiana var. fulvopilosa | Gagnep. | Notul. Syst. (Paris) 3: 142 | 1915 |
| Ipomoea boisiana var. rufopilosa | Gagnep. | Fl. Gén. Indo-Chine 4: 263 | 1915 |
| Ipomoea bolusiana | Schinz | Verh. Bot. Vereins Prov. Brandenburg 30: 271 | 1888 |
| Ipomoea bolusiana | |||
| Ipomoea bolusiana subsp. bolusiana | Schinz | ||
| Ipomoea bolusiana var. pinnatipartita | Verdc. | Kirkia 6: 118 | 1967 |
| Ipomoea bombycina | (Choisy) Benth. & Hook. f. | Gen. Pl. 2: 873 | 1876 |
| Ipomoea bona-nox | L. | Sp. Pl. (ed. 2) 1: 228 | 1762 |
| Ipomoea bona-nox var. purpurascens | Ker Gawl. | Bot. Reg. 4:pl. 290 | 1818 |
| Ipomoea bonariensis | Hook. | Bot. Mag. 65: t. 3665 | 1839 |
| Ipomoea bonariensis subsp. aspera | Hassl. | Repert. Spec. Nov. Regni Veg. 9: 153 | 1911 or 1911 |
| Ipomoea bonariensis var. bonariensis | |||
| Ipomoea bonariensis var. calvescens | Hallier | Jahrb. Hamburg. Wiss. Anst. 16: 51 | 1899 |
| Ipomoea bonariensis var. chacoensis | O’Donell | Lilloa 29: 125 | 1959 |
| Ipomoea bonariensis fo. cordata | Hassl. | Repert. Spec. Nov. Regni Veg. 9: 153 | 1911 |
| Ipomoea bonariensis var. cordifolia | Chodat & Hassl. | Bull. Herb. Boissier 5: 695 | 1905 |
| Ipomoea bonariensis var. genuina | Chodat & Hassl. | Bull. Herb. Boissier 5: 695 | 1905 |
| Ipomoea bonariensis fo. glabrata | Hassl. | Repert. Spec. Nov. Regni Veg. 9: 153 | 1911 |
| Ipomoea bonariensis var. grandiflora | Chodat & Hassl. | Bull. Herb. Boissier 5: 695 | 1905 |
| Ipomoea bonariensis var. hispida | Hassl. | Repert. Spec. Nov. Regni Veg. 9: 154 | 1911 or 1911 |
| Ipomoea bonariensis subvar. integrifolia | Hallier f. | Jahrb. Hamburg. Wiss. Anst. Beih. 16(3): 52 | 1899 or 1899 |
| Ipomoea bonariensis fo. intermedia | Hassl. | Repert. Spec. Nov. Regni Veg. 9: 153 | 1911 |
| Ipomoea bonariensis fo. lobata | Hassl. | Repert. Spec. Nov. Regni Veg. 9: 154 | 1911 |
| Ipomoea bonariensis subsp. mollis | Hassl. | Repert. Spec. Nov. Regni Veg. 9: 153 | 1911 |
| Ipomoea bonariensis var. pubescens | Hassl. | Repert. Spec. Nov. Regni Veg. 9: 154 | 1911 or 1911 |
| Ipomoea bonariensis var. pubisepala | Hassl. | Repert. Spec. Nov. Regni Veg. 9: 153 | 1911 |
| Ipomoea bonariensis var. rupestris | Chodat & Hassl. | Bull. Herb. Boissier 5: 695 | 1905 |
| Ipomoea bonariensis fo. subintegra | Hassl. | Repert. Spec. Nov. Regni Veg. 9: 154 | 1911 |
| Ipomoea bonariensis var. tomentosa | Hassl. | Repert. Spec. Nov. Regni Veg. 9: 154 | 1911 or 1911 |
| Ipomoea bonariensis fo. trichosepala | Hassl. | Repert. Spec. Nov. Regni Veg. 9: 154 | 1911 |
| Ipomoea bonariensis subvar. triloba | Hallier f. | Jahrb. Hamburg. Wiss. Anst. Beih. 16(3): 51 | 1899 |
| Ipomoea bonariensis fo. villicaulis | Chodat & Hassl. | Bull. Herb. Boissier, sér. 2, 5: 695 | 1905 |
| Ipomoea bowieana | Baker | ||
| Ipomoea brachypoda | Benth. | Bot. Voy. Sulphur 135 | 1844 or 1845 |
| Ipomoea bracteata | Cav. | Icon. 5: 51, t. 477 | 1799 |
| Ipomoea bracteata | Wight | Icon. Pl. Ind. Orient. t. 1374 | 1848 |
| Ipomoea bracteata | Rudolph ex Ledeb. | Neues J. Bot. 2: 292 | 1807 |
| Ipomoea bracteata var. bracteata | |||
| Ipomoea bracteata var. lobata | C.B. Clarke | Fl. Brit. India 4: 204 | 1883 |
| Ipomoea bracteata var. pubescens | Rob. & Greenm. | Amer. J. Sci. Arts, ser. 3 50(296): 160 | 1895 |
| Ipomoea bracteata var. viridibracta | J.A. McDonald | Brenesia 28: 60 | 1989 |
| Ipomoea brasiliana | Meisn. | ||
| Ipomoea brasiliensis | (L.) Sweet | Hort. Suburb. Lond. 35 | 1818 |
| Ipomoea brasiliensis | (L.) G. Mey. | Prim. Fl. Esseq. 97 | 1818 |
| Ipomoea brassii | C.T. White | ||
| Ipomoea breedlovei | L.O. Williams | Fieldiana, Bot. 32(12): 188 | 1970 |
| Ipomoea breviflora | G. Mey. | Prim. Fl. Esseq. 100 | 1818 |
| Ipomoea brevifolia | G. Mey. | Prim. Fl. Esseq. 100 | 1818 |
| Ipomoea brevipedicellata | (Hallier f.) Hallier f. | Meded. Rijks-Herb. 46: 20 | 1922 |
| Ipomoea brevipes | Peter | Nat. Pflanzenfam. IV(3a): 30 | 1897 or 1891 |
| Ipomoea brevipes | Choisy | Prodr. 9: 349 | 1845 |
| Ipomoea bronsonii | J. N. Gerard | Gard. & Forest 5: 345 | 1892 |
| Ipomoea buchii | Urb. | Symb. Antill. 3: 356 | 1903 |
| Ipomoea buchneri | Peter | Nat. Pflanzenfam. IV(3a): 29 | 1897 or 1891 |
| Ipomoea bufalina | Choisy | ||
| Ipomoea bullata | Oliv. | Trans. Linn. Soc. London, Bot. 2: 343, t. 62 | 1887 |
| Ipomoea burchellii | Meisn. | Fl. Bras. 7: 271 | 1869 |
| Ipomoea burmanni | K.D. Koenig ex Choisy | Prodr. 9: 330, 392 | 1845 |
| Ipomoea burmanni | Choisy | Prodr. 9: 350 | 1845 |
| Ipomoea bussei | Pilg. | Bot. Jahrb. Syst. 45: 220 | 1910 |
| Ipomoea caerulea | Roxb. | Bot. Reg. 4: t: 276 | 1818 |
| Ipomoea cairica | (L.) Sweet | Hort. Brit. 2: 287 | 1826 |
| Ipomoea cairica var. cairica | |||
| Ipomoea cairica var. gracillima | (Collett & Hemsl.) C.Y. Wu | Rep. Stud. Pl. Trop. Subtrop. Yunnan 1: 120 | 1965 |
| Ipomoea cairica var. hederacea | Hallier f. | ||
| Ipomoea cairica var. indica | Hallier f. | Annuario Reale Ist. Bot. Roma 7: 231 | 1898 |
| Ipomoea cairica var. lineariloba | Deg. & Oostst. | ||
| Ipomoea cairica var. semine-glabra | 1978 | ||
| Ipomoea calantha | Griseb. | Cat. Pl. Cub. 202?03 | 1866 |
| Ipomoea calcarata | Rendle | ||
| Ipomoea calderonii | Standl. | J. Wash. Acad. Sci. 14(11): 242 | 1924 |
| Ipomoea calidicola | Standl. & L.O. Williams | Ceiba 3(2): 127 | 1952 |
| Ipomoea callida | House | Muhlenbergia 3(3): 42, t. 3 | 1907 |
| Ipomoea calodendron | O’Donell | Lilloa 23: 480, t. 9 | 1950 |
| Ipomoea caloneura | Meisn. | Fl. Bras. 7: 281 | 1869 |
| Ipomoea calophylla | C. Wright ex Griseb. | Cat. Pl. Cub. 204 | 1866 |
| Ipomoea calophylla | Fenzl | Flora 27: 312 | 1844 |
| Ipomoea caloxantha | Diels | Notes Roy. Bot. Gard. Edinburgh 5(25): 203?04 | 1912 |
| Ipomoea calva | House | Bot. Gaz. 43(6): 410, f. 1 | 1907 |
| Ipomoea calycina | (Roxb.) Benth. ex C.B. Clarke | Fl. Brit. India 4(10): 201 | 1883 |
| Ipomoea calycina var. blepharosepala | (Hochst. ex A. Rich.) Di Capua | Annuario Reale Ist. Bot. Roma 8(2): 227 | 1904 |
| Ipomoea calycina var. cardiosepala | Di Capua | Annuario Reale Ist. Bot. Roma 8(2): 226?27 | 1904 |
| Ipomoea calycina var. neglecta | Di Capua | Annuario Reale Ist. Bot. Roma 8(2): 227?28 | 1904 |
| Ipomoea calycosa | Choisy | ||
| Ipomoea calyptrata | Dammer | Bot. Jahrb. Syst. 23(57): 40 | 1897 |
| Ipomoea calystegioides | Hallier f. | ||
| Ipomoea campanulata | L. | Sp. Pl. 1: 160 | 1753 |
| Ipomoea campanulata var. illustris | C.B. Clarke | Fl. Brit. India 4: 211 | 1883 |
| Ipomoea campestris | Meisn. | ||
| Ipomoea camporum | A. Chev. ex Hutch. & Dalziel | Fl. W. Trop. Afr. 2: 215 | 1931 |
| Ipomoea cana | E. Mey. | Zwei Pflanzengeogr. Dokum. 195 | |
| Ipomoea canescens | (Kunth) G. Don | Gen. Hist. 4: 273 | 1838 |
| Ipomoea capillacea | (Kunth) G. Don | Gen. Hist. 4: 267 | 1838 |
| Ipomoea capillacea var. capillacea | |||
| Ipomoea capillacea var. patens | A. Gray | Syn. Fl. N. Amer. (ed. 2) 434 | 1886 |
| Ipomoea capitata | Roem. & Schult. | Syst. Veg. (ed. 15 bis) 4: 238 | 1819 |
| Ipomoea capitata | (Desr.) Choisy | Prodr. 9: 365 | 1845 |
| Ipomoea capitellata | Choisy | Mém. Soc. Phys. Genève 6: 457 | 1833 |
| Ipomoea capparoiides | Choisy | Mém. Soc. Phys. Genève 8: 59 | 1838 |
| Ipomoea carajasensis | D.F. Austin | Acta Amazon. 11(2): 291 | 1981 |
| Ipomoea cardenasiana | O’Donell | Dusenia 1: 375, t. | 1950 |
| Ipomoea cardiophylla | A. Gray | Syn. Fl. N. Amer. (ed. 2) 2(1): 213 | 1886 |
| Ipomoea cardiosepala | Hochst. ex Baker & Wright | Fl. Trop. Afr. 4(2): 147 | 1905 |
| Ipomoea cardiosepala | Meisn. | Fl. Bras. 7: 265 | 1869 |
| Ipomoea carletonii | Holz. | Contr. U.S. Natl. Herb. 1(6): 211, pl. 17 | 1892 |
| Ipomoea carmesina | Proctor | J. Arnold Arbor. 63(3): 292, map 37 | 1982 |
| Ipomoea carnea | Jacq. | Enum. Syst. Pl. 13 | 1760 |
| Ipomoea carnea fo. albiflora | Moldenke | Phytologia 2: 224 | 1947 |
| Ipomoea carnea fo. carnea | |||
| Ipomoea carnea subsp. carnea | |||
| Ipomoea carnea subsp. fistulosa | (Mart. ex Choisy) D.F. Austin | Taxon 26(2?): 237 | 1977 |
| Ipomoea carnosa | R. Br. | Prodr. 485 | 1810 |
| Ipomoea carolina | Pursh | Fl. Amer. Sept. 1: 145 | 1814 or 1813 |
| Ipomoea carolina | L. | Sp. Pl. 1: 160 | 1753 |
| Ipomoea carrizalia | Brandegee | Univ. Calif. Publ. Bot. 4(19): 382 | 1913 |
| Ipomoea cataractae | Endl. | Prodr. Fl. Norfolk. 53 | |
| Ipomoea cathartica | Poir. | Encycl., Suppl. 4(2): 633 | 1816 |
| Ipomoea caudata | Fernald | Proc. Amer. Acad. Arts 36(27): 498 | 1901 |
| Ipomoea cavalcantei | D.F. Austin | Acta Amazon. 11(2): 292 | 1981 |
| Ipomoea cavanillesii | Roem. & Schult. | Syst. Veg. (ed. 15 bis) 4: 214 | 1819 |
| Ipomoea cearensis | O’Donell | Lilloa 26: 363, t.4 | 1953 |
| Ipomoea cecilae | N.E. Br. | ||
| Ipomoea cecilae var. anomophylla | Merxm. | ||
| Ipomoea cecilae var. quinquesecta | Merxm. | ||
| Ipomoea cephalantha | Baker | Bull. Misc. Inform. Kew 1894: 69 | 1894 |
| Ipomoea cephalantha | Dammer | Bot. Jahrb. Syst. 23(5, Beibl. 57): 39 | 1897 |
| Ipomoea cernua | Arechav. | Anales Mus. Hist. Nat. Montevideo 7: 192 | 1910 |
| Ipomoea cernua | Hassl. | Repert. Spec. Nov. Regni Veg. 9: 156 | 1911 |
| Ipomoea cernua var. ambigua | (Meisn.) Arechav. | Anales Mus. Hist. Nat. Montevideo 7: 192 | 1910 |
| Ipomoea cernua fo. cernua | |||
| Ipomoea cernua var. cernua | |||
| Ipomoea cernua fo. chacoensis | Hassl. | Repert. Spec. Nov. Regni Veg. 9: 156 | 1911 |
| Ipomoea cernua fo. obtusiflora | Hassl. | Repert. Spec. Nov. Regni Veg. 9: 156 | 1911 |
| Ipomoea cernua fo. palmirense | Arechav. | Anales Mus. Hist. Nat. Montevideo 7: 192 | 1911 |
| Ipomoea cernua fo. platensis | Hassl. | Repert. Spec. Nov. Regni Veg. 9: 156 | 1911 |
| Ipomoea cernua fo. yapeyuana | Arechav. | Anales Mus. Hist. Nat. Montevideo 7: 192 | 1911 |
| Ipomoea chamelana | J.A. McDonald | Biótica 12(3): 217?19, f. 1 | 1987 |
| Ipomoea chanetii | Léveillé, Augustin(e) Abel Hector | Repert. Spec. Nov. Regni Veg. 9(222-226): 452?53 | 1911 |
| Ipomoea cheirophylla | O’Donell | Lilloa 29: 141 | 1959 |
| Ipomoea chenopodiifolia | (M. Martens & Galeotti) Hemsl. | Biol. Cent.-Amer., Bot. 2(11): 385 | 1882 |
| Ipomoea chiapensis | Brandegee | Univ. Calif. Publ. Bot. 6(4): 60 | 1914 |
| Ipomoea chilensis | A. Braun & C.D. Bouch?,Index Sem. (Berlin) 1857: Append. 1" | 1858 | |
| Ipomoea chiliantha | Hallier f. | Bull. Herb. Boissier 7: 50 | 1899 |
| Ipomoea chilopsidis | Standl. | Publ. Field Mus. Nat. Hist., Bot. Ser. 17(2): 206 | 1937 |
| Ipomoea chiriquiensis | Standl. | Ann. Missouri Bot. Gard. 27(3): 334?35 | 1940 |
| Ipomoea chloroneura | Hallier f. | Bot. Jahrb. Syst. 18: 132 | 1893 |
| Ipomoea chodatiana | O’Donell | Lilloa 23: 484, t. 10 | 1950 |
| Ipomoea choisiana | Wight ex Safford | Contr. U.S. Natl. Herb. 9: 298 | 1905 |
| Ipomoea cholulensis | Kunth | Nov. Gen. Sp. (quarto ed.) 3: 112 | 1818 or 1819 |
| Ipomoea chondrosepala | Hallier f. | Bull. Herb. Boissier 7: 49 | 1899 |
| Ipomoea chryseides | Ker Gawl. | Bot. Reg. 4:pl. 270 | 1818 |
| Ipomoea chrysocalyx | D.F. Austin | Fl. Ecuador 15: 45 | 1982 |
| Ipomoea chrysochaetia | Hallier f. | Bot. Jahrb. Syst. 18: 133 | 1894 |
| Ipomoea chrysochaetia var. lasiophylla | (Hallier f.) Lejoly & Lisowski | Fragm. Florist. Geobot. 37(1): 52 | 1992 |
| Ipomoea chrysochaetia var. velutipes | (Welw. ex Rendle) Lejoly & Lisowski | Fragm. Florist. Geobot. 37(1): 52 | 1992 |
| Ipomoea chrysotricha | Meisn. | Fl. Bras. 7: 243 | 1869 |
| Ipomoea chrysotricha var. boliviana | Meisn. | ||
| Ipomoea chrysotrichoides | Hassl. | ||
| Ipomoea cicatricosa | Baker | Kew Bull. 1895: 221 | 1895 |
| Ipomoea ciervensis | Painter | Bot. Gaz. 43(6): 408 | 1907 |
| Ipomoea cincta | Roem. & Schult. | Syst. Veg. (ed. 15 bis) 4: 254 | 1819 |
| Ipomoea cissoides | (Lam.) Griseb. | Fl. Brit. W. I. 473 | 1864 or 1862 |
| Ipomoea cissoides unranked guadaloupensis | (Steud.) Hallier f. | Ann. New York Acad. Sci. 18(6): 206 | 1908 |
| Ipomoea cissoides var. subintegrifolia | Meisn. | Fl. Bras. 7: 229?30 | 1869 |
| Ipomoea cissoides fo. viscidula | Meisn. | Fl. Bras. 7: 229 | 1869 |
| Ipomoea clarensis | Alain | Mem. Soc. Cub. Hist. Nat. Felipe Poey" 22: 121" | 1955 |
| Ipomoea clarkei | Hook. f. | Fl. Brit. India 4(12): 734 | 1885 |
| Ipomoea classeniana | Huber | Cat. Gen. 1870&1871: 7 | 1870 |
| Ipomoea clausa | Rudolphi ex Ledeb. & Adlerstam | Pl. Doming. 14 | 1805 |
| Ipomoea clavata | (G. Don) Ooststr. ex J.F. Macbr. | Publ. Field Mus. Nat. Hist., Bot. Ser. 11(1): 3 | 1931 |
| Ipomoea clewellii | C. Nelson | Phytologia 72(6): 401 | 1992 |
| Ipomoea coccinea | L. | Sp. Pl. 1: 160 | 1753 |
| Ipomoea coccinea | Sess?& Moc. | Sp. Pl. (ed. 2) 228 | 1762 |
| Ipomoea coccinea var. coccinea | |||
| Ipomoea coccinea var. curviflora | Griseb. | Fl. Brit. W. I. 474 | 1864 or 1862 |
| Ipomoea coccinea var. hederifolia | (L.) A. Gray | Syn. Fl. N. Amer. 2(1): 209 | 1878 |
| Ipomoea coccinea var. luteola | (Jacq.) Meisn. | Fl. Bras. 7: 218 | 1869 |
| Ipomoea coccinea var. luteola | Arechav. | Anales Mus. Hist. Nat. Montevideo 7: 191 | 1910 |
| Ipomoea coccinea var. pubescens | Schltdl. & Cham. | Linnaea 5: 118 | 1830 |
| Ipomoea codonantha | Benth. | Pl. Hartw. 120 | 1843 |
| Ipomoea collina | House | Bot. Gaz. 43(6): 412, f. 4 | 1907 |
| Ipomoea colombiana | O’Donell | Lilloa 26: 365, t. 5, f. 1 | 1953 |
| Ipomoea commutata | Roem. & Schult. | Syst. Veg. (ed. 15 bis) 4: 228 | 1819 |
| Ipomoea commutata | |||
| Ipomoea comosa | House | Ann. New York Acad. Sci. 18: 201 | 1908 |
| Ipomoea conceiroi | Rendle | J. Bot. 46: 182 | 1908 |
| Ipomoea concinna | House | Muhlenbergia 3(3): 42 t. 2, f. c | 1907 |
| Ipomoea concolora | (Matuda) D.F. Austin | Ann. Missouri Bot. Gard. 64(2): 335 | 1977 or 1978 |
| Ipomoea confertiflora | Standl. | Publ. Carnegie Inst. Wash. 461(4): 83 | 1935 |
| Ipomoea congesta | R. Br. | Prodr. 485 | 1810 |
| Ipomoea consimilis | Schulze-Menz | Notizbl. Bot. Gart. Berlin朌ahlem 14: 112 | 1938 |
| Ipomoea contorquens | Choisy | Prodr. 9: 385 | 1845 |
| Ipomoea contorquens var. contorquens | |||
| Ipomoea contorquens var. heterophylla | Meisn. | Fl. Bras. 7: 286 | 1869 |
| Ipomoea contorquens var. simplicifolia | Meisn. | Fl. Bras. 7: 286 | 1869 |
| Ipomoea contorquens var. vulgaris | Meisn. | Fl. Bras. t: 286 | 1869 |
| Ipomoea contorta | Choisy | ||
| Ipomoea contrerasii | L.O. Williams | Fieldiana, Bot. 32(12): 189 | 1970 |
| Ipomoea convolvuloides | Hallier f. | ||
| Ipomoea convolvulus | |||
| Ipomoea convolvulus var. guineensis | Schumach. & Thonn. | Beskr. Guin. Pl. 90 | 1827 |
| Ipomoea conzattii | Greenm. | Publ. Field Columb. Mus., Bot. Ser. 2(6): 258 | 1907 |
| Ipomoea coptica | (L.) Roth ex Roem. & Schult. | Syst. Veg. (ed. 15 bis) 4: 208 | 1819 |
| Ipomoea coptica | Roem. & Schult. | ||
| Ipomoea coptica var. acuta | Choisy | Prodr. 9: 384 | 1845 |
| Ipomoea coptica var. coptica | |||
| Ipomoea cordata | L.B. Sm. & B.G. Schub. | Contr. Gray Herb. 127: 31?2, t. 2, f. 33, 34 | 1939 |
| Ipomoea cordatotriloba | Dennst. | Nomencl. Bot. 1: 246 | 1810 |
| Ipomoea cordatotriloba var. australis | (O’Donell) D.F. Austin | Taxon 37(1): 185 | 1988 |
| Ipomoea cordatotriloba var. cordatotriloba | |||
| Ipomoea cordatotriloba var. torreyana | (A. Gray) D.F. Austin | Taxon 37(1): 185 | 1988 |
| Ipomoea cordifolia | Carey | Hort. Suburb. Calcutt. 358 | 1845 |
| Ipomoea cordobana | Peter | Nat. Pflanzenfam. IV(3a): 31 | 1897 or 1891 |
| Ipomoea cordofana | Choisy | Prodr. 9: 350 | 1845 |
| Ipomoea coriacea | Choisy | Prodr. 9: 358 | 1845 |
| Ipomoea cornucopia | Chodat & Hassl. | Bull. Herb. Boissier, sér. 2, 5: 688 | 1905 |
| Ipomoea corralinensis | Choisy ex A. DC. | Prodr. 9: 361 | 1845 |
| Ipomoea corymbosa | (L.) Roth | Syst. Veg. (ed. 15 bis) 4: 232 | 1819 |
| Ipomoea coscinosperma | Hochst. ex Choisy | Prodr. 9: 354 | 1845 |
| Ipomoea coscinosperma var. glabra | Schimp. ex Baker & Rendle | 1905 | |
| Ipomoea coscinosperma var. hirsuta | A. Rich. | 1851 | |
| Ipomoea costaricensis | Kuntze | Revis. Gen. Pl. 2: 443 | 1891 |
| Ipomoea costata | F. Muell. ex Benth. | ||
| Ipomoea costellata | Torr. | Rep. U.S. Mex. Bound. 2(1): 149 | 1859 |
| Ipomoea costellata var. costellata | 2002 | ||
| Ipomoea costellata var. edwardsensis | O’Kennon & G.L. Nesom | Sida 20(1): 39?4, f. 1?, 3 [map_] | 2002 |
| Ipomoea crassicaulis | (Benth.) B.L. Rob. | Proc. Amer. Acad. Arts 51(10): 530 | 1916 |
| Ipomoea crassifolia | Cav. | Descr. Pl. 100 | 1802 |
| Ipomoea crassifolia | Pers. | Syn. Pl. 1: 184 | 1805 |
| Ipomoea crassipes | Hook. | Bot. Mag. 70: , t. 4068 | 1844 |
| Ipomoea crassipes var. crassipes | |||
| Ipomoea crassipes var. hewittioides | Hallier f. | Bull. Herb. Boissier 7: 49 | 1899 |
| Ipomoea crepidiformis | Hallier f. | Bot. Jahrb. Syst. 18: 131 | 1893 |
| Ipomoea crepidiformis var. crepidiformis | |||
| Ipomoea crepidiformis var. microcephala | Verdc. | Kew Bull. 13: 207 | 1958 |
| Ipomoea crepidiformis var. minor | Rendle | J. Bot. 39: 20 | 1901 |
| Ipomoea crinata | Brandegee | Zo?5: 216 | 1905 |
| Ipomoea crinicalyx | S. Moore | Trans. Linn. Soc. London, Bot. 4(3): 402, t. 27, f. 1 | 1895 |
| Ipomoea crinita | Brandegee | Zo?5(10): 216?17 | 1905 |
| Ipomoea crispa | Hallier f. | ||
| Ipomoea cristulata | Hallier f. | Meded. Rijks-Herb. 46: 20 | 1922 |
| Ipomoea crocea | McPherson ex Breedlove | Listados Floríst. México 4: 75 | 1986 |
| Ipomoea crotonifolia | Gardner | ||
| Ipomoea cruckshanksii | Choisy | Prodr. 9: 389 | |
| Ipomoea cubensis | (House) Urb. | Symb. Antill. 9: 427 | 1925 |
| Ipomoea cuernavacensis | House | Bot. Gaz. 43(6): 410 | 1907 |
| Ipomoea cuneifolia | Meisn. | Fl. Bras. 7: 245 | 1869 |
| Ipomoea cuneifolia | A. Gray | Proc. Amer. Acad. Arts 19: 90?1 | 1884 or 1883 |
| Ipomoea cuneifolia var. acutifolia | Meisn. | ||
| Ipomoea cuprinacoma | E. Carranza & J.A. McDonald | Lundellia 7: 1?, f. 1? | 2004 |
| Ipomoea curassavica | All. | Auct. Syn. 10 | 1773 |
| Ipomoea curtissii | House | Ann. New York Acad. Sci. 18(6): 257 | 1908 |
| Ipomoea cuspidata | D. Don | Prodr. Fl. Nepal. 98 | 1825 |
| Ipomoea cuspidata | Ruiz & Pav. | Fl. Peruv. 2: 11, t. 119 | 1799 |
| Ipomoea cyamoclita | St.-Lag. | Ann. Soc. Bot. Lyon 7(1): 128 | 1880 |
| Ipomoea cyanantha | Griseb. | Fl. Brit. W. I. 469 | 1864 or 1862 |
| Ipomoea cymosa | (Desr.) Roem. & Schult. | Syst. Veg. (ed. 15 bis) 6: 241 | 1820 |
| Ipomoea cymosa | Lindl. | Edwards’s Bot. Reg. 29: t. 24 | 1843 |
| Ipomoea cymosa var. macra | C.B. Clarke | ||
| Ipomoea cynanchifolia | C.B. Clarke | Fl. Brit. India 4(10): 208 | 1883 |
| Ipomoea cynanchifolia | Meisn. | Fl. Bras. 7: 274 | 1869 |
| Ipomoea dactylophylla | Griseb. | Cat. Pl. Cub. 203?04 | 1866 |
| Ipomoea dajabonensis | Alain | Anuario Acad. Ci. Republ. Dominic., Bot. 3: 68 | 1977 or 1978 |
| Ipomoea dammarana | Rendle | J. Bot. 34: 36 | 1896 |
| Ipomoea darainensis | Deroin, Ranir. & Nusb. | Candollea 63(235): 240 | 2008 |
| Ipomoea dasysperma | Jacq. | ||
| Ipomoea dasysperma var. disperma | Ram. Goyena | Fl. Nicarag. 2: 652 | 1911 |
| Ipomoea dasysperma var. odontosepala | Verdc. | ||
| Ipomoea daturiflora | Meisn. | Fl. Bras. 7: 273 | 1869 |
| Ipomoea davidsoniae | Standl. | Publ. Field Mus. Nat. Hist., Bot. Ser. 22(2): 98 | 1940 |
| Ipomoea dealbata | (M. Martens & Galeotti) Hemsl. | Biol. Cent.-Amer., Bot. 2(11): 386 | 1882 |
| Ipomoea decasperma | Hallier f. | Bull. Herb. Boissier 5: 386, t. 14 | 1897 |
| Ipomoea deccana | D.F. Austin | ||
| Ipomoea deccana var. lobata | S.C. Johri | J. Econ. Taxon. Bot. 5: 432 | 1984 |
| Ipomoea decemcornuta | O’Donell | Lilloa 26: 366, t. 6 | 1953 |
| Ipomoea decipiens | Dammer | ||
| Ipomoea decora | Meisn. | Fl. Bras. 7: 272 | 1869 |
| Ipomoea delphinifolia | M. Martens & Galeotti | Bull. Acad. Roy. Sci. Bruxelles 12(2): 265 | 1845 |
| Ipomoea delphinioides | Choisy | Mém. Soc. Phys. Genève 8(1): 53 | 1838 |
| Ipomoea demerariana | Choisy | Prodr. 9: 361 | 1845 |
| Ipomoea demissa | Hallier f. | Bot. Jahrb. Syst. 18: 129 | 1893 |
| Ipomoea densibracteata | O’Donell | Lilloa 23: 438 | 1950 |
| Ipomoea dentata | (Vahl) Roem. & Schult. | Syst. Veg. (ed. 15 bis) 4: 789 | 1819 |
| Ipomoea denticulata | (Lam.) Choisy | Mém. Soc. Phys. Genève 6: 467 | 1833 |
| Ipomoea deppeana | G. Don | Gen. Hist. 4: 276 | 1824 |
| Ipomoea descolei | O’Donell | Lilloa 23: 440, t. 8 | 1950 |
| Ipomoea desertorum | House | Ann. New York Acad. Sci. 18(6): 203 | 1908 |
| Ipomoea desmophylla | Bojer ex Choisy | Prodr. 9: 353 | 1845 |
| Ipomoea desmophylla var. oblonga | Choisy | Prodr. 9: 353 | 1845 |
| Ipomoea desrousseauxii | Steud. | Nomencl. Bot. (ed. 2) 816 | 1841 |
| Ipomoea diamantinensis | J.M. Black | ||
| Ipomoea dichoroa | Hochst. in A. Rich. | Tent. Fl. Abyss. 2: 68 | 1850 |
| Ipomoea dichotoma | Kunth | Nov. Gen. Sp. (quarto ed.) 3: 112 | 1818 or 1819 |
| Ipomoea dichotoma | Choisy | Prodr. 9: 383 | 1845 |
| Ipomoea dichotoma var. integrifolia | Meisn. | ||
| Ipomoea dichotoma var. longiflora | Choisy | ||
| Ipomoea dichotoma var. trilobata | Meisn. | Fl. Bras. 7: 281, pl. 101 f. 2 (en part.) | 1869 |
| Ipomoea dichroa | Choisy | Prodr. 9: 364 | 1845 |
| Ipomoea diegoae | M.C.Lara | Acta Bot. Mex. 67: 68?4, f. 1 | 2004 |
| Ipomoea diehlii | M.E. Jones | Contr. W. Bot. 12: 53 | 1908 |
| Ipomoea digitata | Baker & Rendle | Fl. Trop. Afr. 4(2): 189 | 1905 |
| Ipomoea digitata | L. | Syst. Nat. (ed. 10) 2: 924 | 1759 |
| Ipomoea digitata var. digitata | |||
| Ipomoea digitata var. septempartita | Meisn. | Fl. Bras. 7: 279 | 1869 |
| Ipomoea dimorphophylla | Greenm. | Proc. Amer. Acad. Arts 33(25): 482 | 1898 |
| Ipomoea diriadactylina | Hammel | Phytoneuron 2012–27: 1–5, f. 1A–E, 2, 3 | 2012 |
| Ipomoea discoidesperma | Donn. Sm. | Bot. Gaz. 14(2): 27?8 | 1889 |
| Ipomoea discolor | Jacq. | Pl. Hort. Schoenbr. 3: 6 | 1798 |
| Ipomoea discolor | (Kunth) G. Don | Gen. Hist. 4: 270 | 1838 |
| Ipomoea dissecta | (Jacq.) Pers. | ||
| Ipomoea dissecta | Willd. | Phytographia 5: t. 2 f. 3 | 1794 |
| Ipomoea dissecta | (Jacq.) Pursh | Fl. Amer. Sept. 1: 145 | 1814 or 1813 |
| Ipomoea dissecta var. maximiliani | Meisn. | Veg. Nordeste 84 | 1878 |
| Ipomoea distans | Choisy ex DC. | Prodr. 9: 378 | |
| Ipomoea divergens | House | Muhlenbergia 3(3): 40 | 1907 |
| Ipomoea diversifolia | R. Br. | ||
| Ipomoea diversifolia | Lindl. | Edwards’s Bot. Reg. 23: pl. 1988 | 1837 |
| Ipomoea domingensis | (Desr.) House | Muhlenbergia 3(3): 38 | 1907 |
| Ipomoea donaldsonii | Rendle | Bot. Jahrb. Syst. 34: 37 | 1896 |
| Ipomoea dubia | Roem. & Schult. | Syst. Veg. (ed. 15 bis) 4: 216?17 | 1819 |
| Ipomoea dubia | (M. Martens & Galeotti) Hemsl. | Biol. Cent.-Amer., Bot. 2(11): 286 | 1882 |
| Ipomoea dumetorum | Willd. ex Roem. & Schult. | Syst. Veg. (ed. 15 bis) 4: 789 | 1819 |
| Ipomoea dumetorum fo. alba | Moldenke | Phytologia 2: 224 | 1947 |
| Ipomoea dumetorum var. glaucescens | (Kunth) Choisy | Prodr. 9: 378 | 1845 |
| Ipomoea dumosa | (Benth.) L.O. Williams | Fieldiana, Bot. 32(12): 190 | 1970 |
| Ipomoea durangensis | House | Ann. New York Acad. Sci. 18(6): 187 | 1908 |
| Ipomoea eberhardtii | Gagnep. | ||
| Ipomoea ebracteata | (Poir.) Choisy | Prodr. 9: 377 | 1845 |
| Ipomoea echinocalyx | Meisn. | Fl. Bras. 7: 223 | 1869 |
| Ipomoea echioides | Choisy | Mém. Soc. Phys. Genève 8(1): 54 | 1838 |
| Ipomoea edulis | (Choisy) Niederl. | Bol. Mens. Mus. Prod. Argent. 3(29): 190 | 1890 |
| Ipomoea edulis | (Thunb.) Makino | Somoku-Dzusetsu 4: , pl. 25 | 1903 |
| Ipomoea eenii | Rendle | ||
| Ipomoea eggersiana | Peter | Nat. Pflanzenfam. IV(3a): 30 | 1891 |
| Ipomoea eggersii | (House) D.F. Austin | Ann. Missouri Bot. Gard. 64(2): 335 | 1977 or 1978 |
| Ipomoea egregia | House | Torreya 6(6): 124 | 1906 |
| Ipomoea electrina | D.F. Austin & J.A. McDonald | Novon 12(1): 29 | 2002 |
| Ipomoea elegans | Meisn. | ||
| Ipomoea elliptica | Roth | Syst. Veg. 4: 248 | 1819 |
| Ipomoea elongata | Choisy | Prodr. 9: 355 | 1845 |
| Ipomoea elythrocephala | Hallier f. | Bot. Jahrb. Syst. 18: 134 | 1893 |
| Ipomoea emarginata | Kuntze | Revis. Gen. Pl. 2: 444 | 1891 |
| Ipomoea emeiensis | Z.Y. Zhu | Bull. Bot. Res., Harbin 24(3): 257?58, f. 1 | 2004 |
| Ipomoea emetica | Choisy | Prodr. 9: 376 | 1845 |
| Ipomoea ennealoba | P. Beauv. | Fl. Oware 68, t. 101 | 1804 |
| Ipomoea equitans | M.E. Jones | Contr. W. Bot. 15: 149 | 1929 |
| Ipomoea erecta | R. Br. | Prodr. 486 | 1810 |
| Ipomoea erecta | Michx. | J. Hist. Nat. 1: 410 | 1792 |
| Ipomoea eremnobrocha | D.F. Austin | J. Torrey Bot. Soc. 124(2): 145?48, f. 3 | 1997 |
| Ipomoea ericoides | Meisn. | Fl. Bras. 7: 251 | 1869 |
| Ipomoea eriocalyx | Mart. | ||
| Ipomoea eriocarpa | R. Br. | Prodr. 484 | 1810 |
| Ipomoea eriocephala | Moric. | Pl. Nouv. Amer. 43, pl. 29 | 1838 |
| Ipomoea eriocephala var. abbreviata | Choisy | Prodr. 9: 366 | 1845 |
| Ipomoea eriocephala var. sericea | Choisy | Prodr. 9: 366 | 1845 |
| Ipomoea eriosperma | P. Beauv. | Fl. Oware 673, t. 105 | 1804 |
| Ipomoea erosa | Urb. | Symb. Antill. 9: 425 | 1925 |
| Ipomoea estrellensis | Hassl. | Add. Pl. Hassler. 18 | 1917 |
| Ipomoea estrellensis | O’Donell | Arq. Mus. Paranaense 9: 220 | 1952 |
| Ipomoea eustachiana | Jacq. | Obs. 2: 12, t. 36 | 1767 |
| Ipomoea evolvuloides | Moric. | ||
| Ipomoea evolvuloides var. grandiflora | Choisy | ||
| Ipomoea excisa | Urb. | Symb. Antill. 9: 246 | 1924 |
| Ipomoea eximia | House | Muhlenbergia 3(3): 44, t. 2, d | 1907 |
| Ipomoea expansa | J.A. McDonald | Brittonia 34: 336 | 1982 |
| Ipomoea falkioides | Griseb. | Cat. Pl. Cub. 206 | 1866 |
| Ipomoea fastigiata | (Roxb.) Sweet | Hort. Brit. 1: 288 | 1826 |
| Ipomoea fawcettii | Urb. | Ann. New York Acad. Sci. 18(6): 216 | 1908 |
| Ipomoea federalis | K. Afzel. | Svensk Bot. Tidskr. 60: 483 | 1966 |
| Ipomoea fendleriana | Kuntze | Revis. Gen. Pl. 2: 444 | 1891 |
| Ipomoea ferruginea | (Vahl) Roem. & Schult. | Syst. Veg. (ed. 15 bis) 4: 240 | 1819 |
| Ipomoea ficifolia | Lindl. | Sketch Veg. Swan R. Reg. 26, Misc. Not.: 90 | 1840 |
| Ipomoea fiebrigii | Hassl. ex O’Donell | Lilloa 14: 169 | 1948 |
| Ipomoea filicaulis | Blume | Bijdr. Fl. Ned. Ind. 13: 721 | 1826 |
| Ipomoea filiformis | Jacq. | Enum. Syst. Pl. 13 | 1760 |
| Ipomoea filipedunculata | Rusby | Bull. Torrey Bot. Club 26: 150 | 1899 |
| Ipomoea filipes | Benth. ex Meisn. | Fl. Bras. 7: 274 | 1869 |
| Ipomoea fimbriosepala | Choisy | Prodr. 9: 359 | 1845 |
| Ipomoea fissifolia | (McPherson) Eckenw. | Brittonia 41(1): 79 | 1989 |
| Ipomoea fistulosa | Mart. ex Choisy | Prodr. 9: 349 | 1845 |
| Ipomoea fistulosa var. fistulosa | |||
| Ipomoea fistulosa var. goodelii | hort. ex O. Deg. | Fl. Hawaii. Fam. 307 | 1936 |
| Ipomoea fistulosa var. nicaraguensis | Donn. Sm. | Bot. Gaz. 19(7): 256 | 1894 |
| Ipomoea flagellaris | Choisy | ||
| Ipomoea flavida | L.O. Williams | Fieldiana, Bot. 32(12): 190 | 1970 |
| Ipomoea flavivillosa | Schulze-Menz | Notizbl. Bot. Gart. Berlin朌ahlem 14: 111 | 1938 |
| Ipomoea flavopurpurea | Urb. | Symb. Antill. 3: 345 | 1902 |
| Ipomoea fleuryana | A. Chev. | Bull. Mus. Natl. Hist. Nat., s閞. 2 5: 233 | 1933 |
| Ipomoea floribunda | (Kunth) G. Don | Gen. Hist. 4: 267 | 1838 |
| Ipomoea floribunda | Moric. | Pl. Nouv. Amer. 46, t. 31 | 1838 |
| Ipomoea fragilis | Choisy | Prodr. 9: 372 | 1845 |
| Ipomoea fragrans | (Bojer ex Choisy) Bojer ex Hallier f. | Bot. Jahrb. Syst. 18: 153 | 1893 |
| Ipomoea fragrans | (Bojer ex Choisy) Baker | Fl. Mauritius 209 | 1877 |
| Ipomoea franciscana | Choisy | Prodr. 9: 357 | 1845 |
| Ipomoea fruticosa | Kuntze | Revis. Gen. Pl. 2: 444 | 1891 |
| Ipomoea fuchsioides | Griseb. | Cat. Pl. Cub. 205 | 1886 |
| Ipomoea fuchsioides var. glabra | Griseb. | Cat. Pl. Cub. 205 | 1866 |
| Ipomoea fuchsioides var. parvifolia | Griseb. | Cat. Pl. Cub. 205 | 1866 |
| Ipomoea fulva | Bertol. | Hort. Bot. Bonon. 1826: 5 | 1826 |
| Ipomoea fulvicaulis | (Hochst. ex Choisy) Hallier f. | Bot. Jahrb. Syst. 18: 128 | 1893 |
| Ipomoea fulvicaulis var. asperifolia | (Hallier f.) Verdc. | Kew Bull. 14: 338 | 1960 |
| Ipomoea fulvicaulis var. fulvicaulis | |||
| Ipomoea fulvicaulis var. heterocalyx | Verdc. | Kew Bull. 15: 7 | 1961 |
| Ipomoea fulvicoma | Hance | Hooker’s J. Bot. Kew Gard. Misc. 1: 176 | 1849 |
| Ipomoea funaria | Larrañaga | Escr. Larrañaga 2: 78 | 1923 |
| Ipomoea funis | Schltdl. & Cham. | Linnaea 5: 118 | 1830 |
| Ipomoea funis var. funis | |||
| Ipomoea funis var. langlassei | (House) O’Donell | Lilloa 29: 41 | 1959 |
| Ipomoea furcyensis | Urb. | Symb. Antill. 3: 351 | 1902 |
| Ipomoea fusca | Meisn. | Fl. Bras. 7: 247, t. 89, f. 1 | 1869 |
| Ipomoea futilis | A. Nelson | Univ. Wyoming Publ. Sci., Bot. 1(3): 65 | 1924 |
| Ipomoea gabrielii | Choisy | Prodr. 9: 378 | |
| Ipomoea galapagensis | Andersson | Kongl. Vetensk. Acad. Handl. 1853: 213 | 1855 |
| Ipomoea gangetica | Sweet | Hort. Brit. 288 | 1830 |
| Ipomoea garckeana | Vatke | Linnaea 43: 512 | 1882 |
| Ipomoea garnieri | Standl. & L.O. Williams | Ceiba 3(2): 128 | 1952 |
| Ipomoea gemella | (Burm. f.) Roth | Nov. Pl. Sp. 110 | 1821 |
| Ipomoea geminiflora | Welw. p.p. | ||
| Ipomoea gentryi | Standl. | Publ. Field Mus. Nat. Hist., Bot. Ser. 22(1): 46 | 1940 |
| Ipomoea geophilifolia | K. Afzel. | Svensk Bot. Tidskr. Ix: 484 | 1966 |
| Ipomoea gerrardiana | Rendle | ||
| Ipomoea gerrardii | Hook. f. | ||
| Ipomoea gesnerioides | J.A. McDonald | Sida 15(2): 173 | 1992 |
| Ipomoea gigantea | (Silva Manso) Choisy | Prodr. 9: 362 | |
| Ipomoea githaginea | Hochst. ex A. Rich. | Tent. Fl. Abyss. 2: 65 | 1850 |
| Ipomoea glaberrima | Bojer ex Hook. | J. Bot. (Hooker) 1: 357 | 1834 |
| Ipomoea glabra | (Aubl.) Choisy | Prodr. 9: 362 | 1845 |
| Ipomoea glabriuscula | House | Bot. Gaz. 43(6): 409 | 1907 |
| Ipomoea glandulifera | Ruiz & Pav. | Fl. Peruv. 2: 12, t. 121 | 1799 |
| Ipomoea glaucifolia | L. | Sp. Pl. 1: 161 | 1753 |
| Ipomoea glaziovii | Dammer | ||
| Ipomoea globosa | (La Llave) Meisn. | Fl. Bras. 7: 220 | 1869 |
| Ipomoea glossophylla | Chiov. | Ann. Bot. (Rome) 9(1): 83 | 1911 |
| Ipomoea gloverae | J.A. McDonald | Harvard Pap. Bot. 4: 51, f. 1 | 1993 |
| Ipomoea gnaphalosperma | Hochst. ex Choisy | Prodr. 9: 357 | 1845 |
| Ipomoea gomezii | C.B. Clarke | Fl. Brit. India 4: 211 | 1883 |
| Ipomoea goodellii | hort. ex O. Deg. | Fl. Hawaii. Fam. 307 | 1936 |
| Ipomoea gossypioides | Hort. ex Dammann | Wiener Ill. Gart.-Zeitung 22(1): 26, f. 9 | 1897 |
| Ipomoea gossypioides | Parodi | Contr. Fl. Parag. 27 | 1892 |
| Ipomoea goyazensis | Gardner | Icon. Pl. t. 479 | |
| Ipomoea gracilior | Rendle | J. Bot. 46: 180 | 1908 |
| Ipomoea gracilipes | Hassl. | Repert. Spec. Nov. Regni Veg. 9: 158 | 1911 |
| Ipomoea gracilis | R. Br. | Prodr. 484 | 1810 |
| Ipomoea gracilisepala | Rendle | ||
| Ipomoea gracillima | Choisy | ||
| Ipomoea gracillima | (Collett & Hemsl.) Prain | J. Asiat. Soc. Bengal 63(2): 111 | 1894 |
| Ipomoea gracillima | Peter | Nat. Pflanzenfam. IV(3a): 30 | 1897 or 1891 |
| Ipomoea graminiformis | Meisn. | ||
| Ipomoea graminiformis var. densifolia | Chodat & Hassl. | Bull. Herb. Boissier, sér. 2, 5: 690 | 1905 |
| Ipomoea graminiformis fo. minor | Chodat & Hassl. | Repert. Spec. Nov. Regni Veg. 5: 690 | 1905 |
| Ipomoea grandidentata | C.H. Thomps. | Trans. Acad. Sci. St. Louis 20: 18, pl. 7 | 1911 |
| Ipomoea grandiflora | Roxb. | Hort. Bengal. 14 | 1814 |
| Ipomoea grandiflora | (Jacq.) Hallier f. | Bot. Jahrb. Syst. 18(1?): 153 | 1893 |
| Ipomoea grandiflora | (L. f.) Lam. | Tabl. Encycl. 1: 467 | 1791 |
| Ipomoea grandifolia | (Dammer) O’Donell | Arq. Mus. Paranaense 9: 222, f. 6. | 1952 |
| Ipomoea grantii | Oliv. | Trans. Linn. Soc. London 29: 116, t. 80 | 1875 |
| Ipomoea granulosa | Chodat & Hassl. | Bull. Herb. Boissier, sér. 2, 5: 687 | 1905 |
| Ipomoea grayi | Rose | Contr. U.S. Natl. Herb. 1(4): 107 | 1891 |
| Ipomoea greenstockii | Rendle | ||
| Ipomoea grisebachiana | Meisn. | Fl. Bras. 7: 264 | 1869 |
| Ipomoea grisebachiana | Meisn. ex Peter | Nat. Pflanzenfam. IV(3a): 30 | 1897 or 1891 |
| Ipomoea grisebachii | Prain | J. Asiat. Soc. Bengal, Pt. 2, Nat. Hist. 63(2): 107 | 1894 |
| Ipomoea guaranitica | Chodat & Hassl. | Bull. Herb. Boissier, sér. 2, 5: 688 | 1905 |
| Ipomoea guyanensis | (Aubl.) Choisy | Prodr. 9: 366 | 1845 |
| Ipomoea habeliana | Oliv. | Icon. Pl. t. 1099 | 1871 |
| Ipomoea hackeliana | (Schinz) Hallier f. | Bot. Jahrb. Syst. 18: 12 | 1894 |
| Ipomoea haenkeana | Choisy | Prodr. 9: 358 | 1845 |
| Ipomoea halierca | I.M. Johnst. | Proc. Calif. Acad. Sci., ser. 4, 20: 85 | 1931 |
| Ipomoea hamiltonii | G. Don | Gen. Hist. 4: 268 | 1838 |
| Ipomoea hardwickii | (Spreng.) Hemsl. | J. Linn. Soc., Bot. 26(174): 160 | 1890 |
| Ipomoea harlingii | D.F. Austin | Fl. Ecuador 15: 49 | 1982 |
| Ipomoea harmandii | Gagnep. | ||
| Ipomoea hartmannii | Vatke | Linnaea 43: 514 | 1882 |
| Ipomoea hartwegii | Meisn. | Fl. Bras. 7: 220 | 1869 |
| Ipomoea hartwegii | Benth. | Pl. Hartw. 15?6 | 1839 |
| Ipomoea hassleriana | Chodat | Bull. Herb. Boissier, sér. 2, 5: 693 | 1905 |
| Ipomoea hastigera | Kunth | Nov. Gen. Sp. (quarto ed.) 3: 111 | 1818 or 1819 |
| Ipomoea hastigera var. hastigera | |||
| Ipomoea hastigera var. jaliscana | (House) O’Donell | Lilloa 29: 45 | 1959 |
| Ipomoea havanensis | (Jacq.) Choisy | Prodr. 9: 368 | 1845 |
| Ipomoea hederacea | Baker & Rendle | Fl. Trop. Afr. 4(2): 159 | 1905 |
| Ipomoea hederacea | Jacq. | Collectanea 1: 124?25, pl. 36 | 1787 |
| Ipomoea hederacea var. hederacea | |||
| Ipomoea hederacea var. himalaica | C.B. Clarke | Fl. Brit. India 4: 200 | 1883 |
| Ipomoea hederacea var. integrifolia | Hallier f. | Jahrb. Hamburg. Wiss. Anst. Beih. 16: 3?2 | 1899 |
| Ipomoea hederacea var. integriuscula | A. Gray | Syn. Fl. N. Amer. (ed. 2) 2(1, Suppl.): 433 | 1886 |
| Ipomoea hederacea var. paichou | J.R. Wu | 1979(1): 97 | 1979 |
| Ipomoea hederifolia | L. | Syst. Nat. (ed. 10) 2: 925 | 1759 |
| Ipomoea helebarda var. sarcopoda | Welw. ex Hiern | Cat. Afr. Pl. 1(3): 737 | 1898 |
| Ipomoea hellebarda | C. Schweinf. ex Hiern | Cat. Afr. Pl. 1(3): 737 | 1898 |
| Ipomoea henryi | Craib | Bull. Misc. Inform. Kew 1911(10): 423?24 | 1911 |
| Ipomoea hepaticifolia | L. | Sp. Pl. 1: 161 | 1753 |
| Ipomoea hephrophylla | Meisn. | Fl. Bras. 7: 219 | 1869 |
| Ipomoea heptaphylla | Voigt | Hort. Suburb. Calcutt. 360 | 1845 |
| Ipomoea heptaphylla | Griseb. | Pl. Wright. 2: 527 | 1862 |
| Ipomoea heptaphylla | Sweet | Hort. Brit. 372 | 1830 |
| Ipomoea hermanniae | (L’H閞.) G. Don | Gen. Hist. 4: 276 | 1838 |
| Ipomoea herpeana | Deroin | Bull. Mus. Natl. Hist. Nat., B, Adansonia, s閞. 4 15(1?): 75 | 1993 |
| Ipomoea heterodoxa | Standl. & Steyerm. | Publ. Field Mus. Nat. Hist., Bot. Ser. 23(2): 82 | 1944 |
| Ipomoea heterophylla | Ortega | Nov. Pl. Descr. Dec. 1: 9 | 1797 |
| Ipomoea heterophylla | R. Br. | Prodr. 487 | 1810 |
| Ipomoea heterophylla | Torr. | Rep. U.S. Mex. Bound. 2(1): 149 | 1859 |
| Ipomoea heterophylla var. aemula | House | Ann. New York Acad. Sci. 18(6): 196 | 1908 |
| Ipomoea heterophylla var. heterophylla | |||
| Ipomoea heterophylla var. subcomosa | House | Ann. New York Acad. Sci. 18(6): 196 | 1908 |
| Ipomoea heterotricha | Didr. | Vidensk. Meddel. Dansk Naturhist. Foren. Kj鴅enhavn 1854: 220 | 1855 |
| Ipomoea heterotricha | Meisn. | Fl. Bras. 7: 280 | 1869 |
| Ipomoea heterotricha var. homotricha | Chodat & Hassl. | Bull. Herb. Boissier 5: 694 | 1905 |
| Ipomoea hierniana | Rendle | J. Bot. 39: 58 | 1901 |
| Ipomoea hieronymi | (Kuntze) O’Donell | Lilloa 14: 171, t. 2 | 1948 |
| Ipomoea hieronymi var. calchaquina | O’Donell | Lilloa 29: 165 | 1959 |
| Ipomoea hieronymi var. hieronymi | |||
| Ipomoea hieronymi var. kurtziana | (O’Donell) O’Donell | Lilloa 29: 163 | 1959 |
| Ipomoea hildebrandtii | Vatke | Linnaea 43: 511 | 1882 |
| Ipomoea hildebrandtii subsp. grantii | Verdc. | Kew Bull. 15: 443 | 1962 |
| Ipomoea hildebrandtii subsp. hildebrandtii | |||
| Ipomoea hildebrandtii subsp. megaensis | Verdc. | Webbia 13: 326 | 1958 |
| Ipomoea hintonii | L.O. Williams | Econ. Bot. 24: 400 | 1970 |
| Ipomoea hirsuta | R. Br. | 1810 | |
| Ipomoea hirsutissima | Gardner | Icon. Pl. sub t. 471 | 1842 |
| Ipomoea hirsutissima var. integrifolia | Chodat & Hassl. | Bull. Herb. Boissier, sér. 2, 5: 688 | 1905 |
| Ipomoea hirsutula | J. Jacq. | Ecl. Pl. Rar. 1(5?): 65, pl. 44 | 1811 or 1813 |
| Ipomoea hirta | M. Martens & Galeotti | Bull. Acad. Roy. Sci. Bruxelles 12(2): 264 | 1845 |
| Ipomoea hirtiflora | M. Martens & Galeotti | Bull. Acad. Roy. Sci. Bruxelles 12(2): 267 | 1845 |
| Ipomoea hirtifolia | R.C. Fang & S.H. Huang | Fl. Xizang. 4: 28?0, f. 15(1?) | 1985 |
| Ipomoea hispaniolae | (Spreng.) G. Don | Gen. Hist. 4: 280 | 1838 |
| Ipomoea hispida | Zuccagni | Collectanea 127 | 1806 |
| Ipomoea hispida | (Vahl) Roem. & Schult. | Syst. Veg. (ed. 15 bis) 4: 238 | 1819 |
| Ipomoea hochstetteri | House | Ann. New York Acad. Sci. 18(6): 223 | 1908 |
| Ipomoea holosericea | Weinm. | Syll. Pl. Nov. 2: 17?8 | 1828 |
| Ipomoea holosericea | E. Mey. ex Choisy | ||
| Ipomoea holubii | Baker | ||
| Ipomoea homotrichoidea | O’Donell | Lilloa 14: 173, t. 3: 13, f. 2 | 1948 |
| Ipomoea hookeri | G. Don | Gen. Hist. 4: 274 | 1838 |
| Ipomoea horrida | Huber | ||
| Ipomoea horsefieldiana | Miq. | Fl. Ned. Ind. 2: 611 | 1857 |
| Ipomoea horsfalliae | Hook. | Bot. Mag. , pl. 3315 | |
| Ipomoea hospitalis | Urb. | Ark. Bot. 23A(5): 102 | 1930 |
| Ipomoea hostmanni | Meisn. | Fl. Bras. 7: 290 | 1869 |
| Ipomoea hotteana | Urb. & Ekman | Ark. Bot. 23A(5): 103 | 1930 |
| Ipomoea humboltiana | Roem. & Schult. | Syst. Veg. (ed. 15 bis) 4: 789 | 1819 |
| Ipomoea hungaiensis | Lingelsh. & Borza | Repert. Spec. Nov. Regni Veg. 13(370?72): 389 | 1914 |
| Ipomoea hungaiensis var. linifolia | C.C. Huang | Rep. Stud. Pl. Trop. Subtrop. Yunnan 1: 119, pl. 35, 3 | 1965 |
| Ipomoea hypargyrea | Griseb. | Cat. Pl. Cub. 204 | 1866 |
| Ipomoea hypargyrea var. baracoensis | Urb. | Symb. Antill. 9(2): 245 | 1924 |
| Ipomoea hypargyrea var. hypargyrea | |||
| Ipomoea hypolenca | Taub. | ||
| Ipomoea hystrix | Hallier f. | ||
| Ipomoea ignava | House | Ann. New York Acad. Sci. 18(6): 214 | 1908 |
| Ipomoea igualensis | Weath. | Proc. Amer. Acad. Arts 45(17): 427?28 | 1910 |
| Ipomoea illustris | Prain | Bengal Pl. 2: 735 | 1903 |
| Ipomoea imbricata | Roth | Ess. Agrostogr. 4: 249 | 1819 |
| Ipomoea imperati | (Vahl) Griseb. | Cat. Pl. Cub. 203 | 1866 |
| Ipomoea inamoena | Pilg. | ||
| Ipomoea incarnata | (Vahl) Choisy | Prodr. 9: 360 | 1845 |
| Ipomoea incerta | (Britton) Urb. | Symb. Antill. 9: 247 | 1924 |
| Ipomoea incomta | Hallier f. | Bot. Jahrb. Syst. 18: 151 | 1893 |
| Ipomoea indica | (Burm.) Merr. | Interpr. Herb. Amboin. 445 | 1917 |
| Ipomoea indica var. acuminata | (Vahl) Fosberg | Bot. Not., Suppl. 129: 38 | 1976 |
| Ipomoea indica fo. alba | H. St. John | Chron. & Fl. Niihau 125 | 1990 |
| Ipomoea indica var. hosakae | Fosberg | Flora of Micronesia 2: 151 | 1967 |
| Ipomoea indica var. indica | |||
| Ipomoea indica var. variabilis | (Schltdl. & Cham.) L.O. Williams | Fieldiana, Bot. 32(12): 191 | 1970 |
| Ipomoea indivisa | (Vell.) Hallier f. | Meded. Rijks-Herb. 46: 20 | 1922 |
| Ipomoea insignis | Andrews | Bot. Rep. t. 636 | |
| Ipomoea insuavis | Blume | Bijdr. Fl. Ned. Ind. 716 | 1825 |
| Ipomoea insularis | (Choisy) Steud. | Nomencl. Bot. (ed. 2) 1: 817 | 1840 |
| Ipomoea intrapilosa | Rose | Gard. & Forest 7: 367 | 1894 |
| Ipomoea invicta | House | Ann. New York Acad. Sci. 18(6): 193 | 1908 |
| Ipomoea involucrata | P. Beauv. | Fl. Oware 52, t. 89 | 1817 |
| Ipomoea involucrata var. burttii | Verdc. | Kew Bull. 13: 206 | 1958 |
| Ipomoea involucrata var. involucrata | |||
| Ipomoea involucrata var. operosa | Verdc. | Kew Bull. 13: 206 | 1958 |
| Ipomoea iodantha | Brandegee | Univ. Calif. Publ. Bot. 4(19): 383 | 1913 |
| Ipomoea iostemma | House | Ann. New York Acad. Sci. 18(6): 207 | 1908 |
| Ipomoea irwiniae | Verdc. | Kew Bull. 13: 214 | 1958 |
| Ipomoea isostemma | House | Ann. New York Acad. Sci. 18: 207 | 1908 |
| Ipomoea jacalana | Matuda | Anales Inst. Biol. Univ. Nac. M閤ico 35: 58 | 1965 |
| Ipomoea jaegeri | Pilg. | Bot. Jahrb. Syst. 45: 220 | 1910 |
| Ipomoea jalapa | Schiede & Deppe ex G. Don | Gen. Hist. 4: 271 | 1838 |
| Ipomoea jalapa | (L.) Pursh | Fl. Amer. Sept. 146?47 | 1814 |
| Ipomoea jalapa | Nutt. & Cox | Journ. Am. Med. Sci. 5: 305 | 1830 |
| Ipomoea jalapoides | Griseb. | Cat. Pl. Cub. 202 | 1886 |
| Ipomoea jaliscana | House | Muhlenbergia 3(3): 39 | 1907 |
| Ipomoea jamaicensis | G. Don | Gen. Hist. 4: 278 | 1838 |
| Ipomoea jamaicensis var. glabrata | Griseb. | Fl. Brit. W. I. 474 | 1864 or 1862 |
| Ipomoea jamaicensis var. jamaicensis | |||
| Ipomoea jamaicensis var. sericea | Meisn. | Fl. Bras. 7: 225, f. 77 | 1869 |
| Ipomoea jamesonii | Choisy | Prodr. 9: 367 | 1845 |
| Ipomoea jicama | Brandegee | Proc. Calif. Acad. Sci., ser. 2, 2: 188 | 1889 |
| Ipomoea jujuyensis | O’Donell | Lilloa 14: 174, t. 4. | 1948 |
| Ipomoea juncea | Choisy | Prodr. 9: 335 | 1845 |
| Ipomoea juramenti | (Kuntze) O’Donell | Lilloa 14: 177 | 1948 |
| Ipomoea kadsura | Choisy | Mém. Soc. Phys. Genève 6: 475 | 1833 |
| Ipomoea karwinskiana | Regel | Index Sem. (St. Petersburg) 46 | 1857 |
| Ipomoea kentrocarpa | Hochst. ex A. Rich. | Tent. Fl. Abyss. 2: 70 | 1851 |
| Ipomoea kentrocaulos | C.B. Clarke | Fl. Brit. India 4: 213 | 1883 |
| Ipomoea keraudreniae | Deroin | Bull. Mus. Natl. Hist. Nat., B, Adansonia, s閞. 4 14(3?): 337, f. 2, 5(map) | 1992 or 1993 |
| Ipomoea kerberii | (E. Fourn.) hort. ex E. Fourn. | Bull. Soc. Tosc. Ortic. 19: 116 | 1894 |
| Ipomoea kilimandschari | Dammer | Pflanzenw. Ost-Afrikas C: 332 | 1895 |
| Ipomoea killipiana | O’Donell | Lilloa 23: 486, t. 11 | 1950 |
| Ipomoea kilwaensis | Pilg. | Bot. Jahrb. Syst. 45: 222 | 1910 |
| Ipomoea kinbergii | Andersson | Kongl. Svenska Vetensk. Acad. Handl., n.s. 212 | 1853 |
| Ipomoea kingii | Diels | Notes Roy. Bot. Gard. Edinburgh | 1912 |
| Ipomoea kirkii | Britten | ||
| Ipomoea kituiensis | Vatke | Linnaea 43: 511 | 1882 |
| Ipomoea kituiensis var. kituiensis | |||
| Ipomoea kituiensis var. massaiensis | Verdc. | Kew Bull. 13: 216 | 1958 |
| Ipomoea kiuninsularis | Masam. | ||
| Ipomoea kleiniana | Roem. & Schult. | Syst. Veg. (ed. 15 bis) 4: 789 | 1819 |
| Ipomoea kotschyana | Hochst. ex Choisy | Prodr. 9: 354 | 1845 |
| Ipomoea kourankoenis | A. Chev. | Bull. Mus. Natl. Hist. Nat., s閞. 2 4: 234 | 1933 |
| Ipomoea krugii | Urb. | Symb. Antill. 5(3): 472 | 1908 |
| Ipomoea kruseana | Matuda | Anales Inst. Biol. Univ. Nac. M閤ico 36: 115, f. 12 | 1966 |
| Ipomoea kunthiana | Meisn. | Fl. Bras. 7: 253 | 1869 |
| Ipomoea kurtziana | O’Donell | Lilloa 14: 179, t. 6? | 1948 |
| Ipomoea kwebensis | N.E. Br. | ||
| Ipomoea lachnaea | Spreng. | Neue Entdeck. Pflanzenk. 3: 29 | 1822 |
| Ipomoea lachnea | Spreng. | ||
| Ipomoea lachnosperma | Choisy | Prodr. 9: 356 | 1845 |
| Ipomoea laciniata | (Dalzell) C.B. Clarke | Fl. Brit. India 4: 200 | 1883 |
| Ipomoea lactea | Voigt | Hort. Suburb. Calcutt. 361 | 1845 |
| Ipomoea lacteola | House | Ann. New York Acad. Sci. 18(6): 229 | 1908 |
| Ipomoea lactescens | Seem. | Bot. Voy. Herald 171?72 | 1854 |
| Ipomoea lactescens | Benth. | Pl. Hartw. 120 | 1843 |
| Ipomoea lacunosa | L. | Sp. Pl. 1: 161 | 1753 |
| Ipomoea lacunosa x cordatotriloba | |||
| Ipomoea lacunosa fo. lacunosa | |||
| Ipomoea lacunosa fo. purpurata | Fernald | Rhodora 40(479): 454 | 1938 |
| Ipomoea laeta | A. Gray | Proc. Amer. Acad. Arts 22: 439 | 1887 |
| Ipomoea lambii | Fernald | Bot. Gaz. 20: 535 | 1895 |
| Ipomoea lambtoniana | Rendle | ||
| Ipomoea lanata | E.A. Bruce | Kew Bull. 1937: 425 | 1937 |
| Ipomoea lanceolata | G. Don | Gen. Hist. 4: 282 | 1837 |
| Ipomoea lanuginosa | O’Donell | Lilloa 23: 445, t. 9 | 1950 |
| Ipomoea lapathifolia | Hallier f. | Bot. Jahrb. Syst. 18: 142 | 1893 |
| Ipomoea lapathifolia var. bussei | (Pilg.) Verdc. | Kew Bull. 15: 9 | 1961 |
| Ipomoea lapathifolia var. lapathifolia | |||
| Ipomoea lapidosa | Vatke | Linnaea 43: 507 | 1882 |
| Ipomoea lasioclada | Choisy | Prodr. 9: 357 | 1845 |
| Ipomoea lasiophylla | Hallier f. | ||
| Ipomoea latifolia | M. Martens & Galeotti | Bull. Acad. Roy. Sci. Bruxelles 12(2): 266 | 1845 |
| Ipomoea laxiflora | Indian J. Forest. 32(1): 120-121 | 2009 | |
| Ipomoea learii | Knight ex Paxton | Paxton’s Mag. Bot. 6: 267 | 1839 |
| Ipomoea lemmonii | A. Gray | Proc. Amer. Acad. Arts 19: 91 | 1884 or 1883 |
| Ipomoea lenis | House | Ann. New York Acad. Sci. 18(6): 188 | 1908 |
| Ipomoea leonensis | B.L. Rob. | Proc. Amer. Acad. Arts 26: 170 | 1891 |
| Ipomoea leprieurii | D.F. Austin | Acta Amazon. 11(2): 291 | 1981 |
| Ipomoea leptocaulos | Hallier f. | Bot. Jahrb. Syst. 18: 126 | 1893 |
| Ipomoea leptophylla | Torr. | Rep. Exped. Rocky Mts. 94 | 1845 |
| Ipomoea leptosiphon | S. Watson | Proc. Amer. Acad. Arts 23(2): 280?81 | 1888 |
| Ipomoea leptotoma | Torr. | Rep. U.S. Mex. Bound. 2(1): 150 | 1859 |
| Ipomoea leptotoma var. wootonii | E.H. Kelso | Rhodora 39(460): 151 | 1937 |
| Ipomoea lesteri | Baker | Bull. Misc. Inform. Kew 1892: 83 | 1892 |
| Ipomoea ?leucantha | Jacq. | Icon. Pl. Rar. 2(1): t. 318 | 1788 |
| Ipomoea ?leucantha | Jacq. | Collectanea 2: 280 | 1788 or 1789 |
| Ipomoea leucantha | Desv. ex Ham. | Prodr. Pl. Ind. Occid. 25 | 1825 |
| Ipomoea leucantha | Webb ex Hook. | Niger Fl. 152 | 1849 |
| Ipomoea leucanthemum | Hallier f. | ||
| Ipomoea leuconeura | Urb. | Symb. Antill. 3: 350 | 1902 |
| Ipomoea leucotricha | Donn. Sm. | Bot. Gaz. 23(1): 10?1 | 1897 |
| Ipomoea ligulata | Bojer | Hortus Maurit. 229 | 1837 |
| Ipomoea lilacina | Schltdl. | Linnaea 20: 31 | 1847 |
| Ipomoea lilacina | Blume | Bijdr. Fl. Ned. Ind. 13: 716 | 1826 |
| Ipomoea lilloana | O’Donell | Lilloa 14: 182, t. 8 | 1948 |
| Ipomoea lindenii | M. Martens & Galeotti | Bull. Acad. Roy. Sci. Bruxelles 12(2): 264 | 1845 |
| Ipomoea lindheimeri | A. Gray | Syn. Fl. N. Amer. 2(1): 210 | 1878 |
| Ipomoea lindheimeri var. lindheimeri | |||
| Ipomoea lindheimeri var. subintegra | House | Ann. New York Acad. Sci. 18(6): 196 | 1908 |
| Ipomoea lindleyi | Choisy | Prodr. 9: 371 | 1845 |
| Ipomoea lindmanii | Urb. | Symb. Antill. 9: 248 | 1924 |
| Ipomoea linearifolia | Hook. f. | Trans. Linn. Soc. London 20: 204 | 1847 |
| Ipomoea lineariloba | Chiov. | Miss. Biol. Borana, Racc. Bot. 4: 174 | 1939 |
| Ipomoea lineariloba | Peter | Nat. Pflanzenfam. IV(3): 39 | 1897 or 1891 |
| Ipomoea lineolata | Urb. | Symb. Antill. 3: 355 | 1903 |
| Ipomoea linifolia | Blume | Bijdr. Fl. Ned. Ind. 13: 721 | 1825 |
| Ipomoea linosepala | Hallier f. | Bot. Jahrb. Syst. 18: 130 | 1894 |
| Ipomoea linosepala subsp. alpina | (Rendle) Lejoly & Lisowski | Fragm. Florist. Geobot. 37(1): 82 | 1992 |
| Ipomoea littoralis | (L.) Boiss. | Fl. Orient. 4: 112 | 1879 |
| Ipomoea littoralis | Blume | Bijdr. Fl. Ned. Ind. 13: 713 | 1825 |
| Ipomoea llaveana | Meisn. | Fl. Bras. 7: 219?20 | 1869 |
| Ipomoea lobata | (Cerv.) Thell. | Vierteljahrsschr. Naturf. Ges. Z黵ich 64: 775 | 1919 |
| Ipomoea lonchophylla | J.M. Black | ||
| Ipomoea longeramosa | Choisy | Prodr. 9: 384 | |
| Ipomoea longicuspis | Meisn. | Fl. Bras. 7: 227 | 1869 |
| Ipomoea longiflora | Humb. & Bonpl. ex Willd. | Enum. Pl. 1: 207 | 1809 |
| Ipomoea longiflora | R. Br. | Prodr. 484 | 1810 |
| Ipomoea longifolia | Benth. | Pl. Hartw. 16 | 1839 |
| Ipomoea longipedunculata | (M. Martens & Galeotti) Hemsl. | Biol. Cent.-Amer., Bot. 2(11): 389 | 1882 |
| Ipomoea longipedunculata | C.Y. Wu | Rep. Stud. Pl. Trop. Subtrop. Yunnan 1: 117, pl. 35, 1 | 1965 |
| Ipomoea longipes | Garcke | Linnaea 22: 66 | 1849 |
| Ipomoea longipes | Engl. | Bot. Jahrb. Syst. 10(3): 246 | 1888 |
| Ipomoea longiracemosa | Choisy | ||
| Ipomoea longistaminea | O’Donell | Lilloa 23: 488, f. 12 | 1950 |
| Ipomoea longituba | Hallier f. | Sitzungsber. Kaiserl. Akad. Wiss., Math.-Naturwiss. Cl., Abt. 1 107: 49 | 1898 |
| Ipomoea lorentzii | Kuntze | Revis. Gen. Pl. 3(3): 217 | 1898 |
| Ipomoea lottiae | J.A. McDonald | Biótica 12(3): 219?21, f. 2 | 1987 |
| Ipomoea lozanii | Painter | Bot. Gaz. 43(6): 411, f. 2 | 1907 |
| Ipomoea lugardi | N.E. Br. | ||
| Ipomoea lugardi var. lugardi | |||
| Ipomoea lugardi var. parviflora | Rendle | ||
| Ipomoea lukafuensis | De Wild. | Ann. Mus. Congo Belge, Bot. s閞. 4, 1: 112, t. 2 | 1903 |
| Ipomoea lundii | Choisy | Mém. Soc. Phys. Genève 8(1): 56 | 1838 |
| Ipomoea lurida | Hassl. | Addenda ad Plantas Hasslerianas 18 | 1917 |
| Ipomoea lutambensis | Schulze-Menz | Notizbl. Bot. Gart. Berlin朌ahlem 14: 111 | 1938 |
| Ipomoea lutea | Hemsl. | Diagn. Pl. Nov. Mexic. 2: 34 | 1879 |
| Ipomoea lutea fo. lutea | |||
| Ipomoea lutea fo. rubra | O’Donell | Lilloa 29: 67 | 1959 |
| Ipomoea luteola | R. Br. | Prodr. 485 | 1810 |
| Ipomoea luteola | Jacq. | Collectanea 2: 266 | 1788 |
| Ipomoea luteoviridis | Ekman & Leonard | Repert. Spec. Nov. Regni Veg. 24: 11 | 1927 |
| Ipomoea luxurians | Moric. | Pl. Nouv. Amer. 58?9, t. 39 | 1839 |
| Ipomoea macalusoi | Mattei | Boll. Reale Orto Bot. Giardino Colon. Palermo 7: 106 | 1908 |
| Ipomoea macdonaldii | E. Carranza | Brittonia 63(1): 66?9, f. 1 | 2011 |
| Ipomoea macedoi | Hoehne | Arq. Bot. Estado S鉶 Paulo 2: 110, t. 46 | 1950 |
| Ipomoea macrantha | Peter | Nat. Pflanzenfam. IV(3a): 31 | 1897 or 1891 |
| Ipomoea macrantha | Roem. & Schult. | Syst. Veg. (ed. 15 bis) 4: 251 | 1819 |
| Ipomoea macrantha | (Kunth) G. Don | Gen. Hist. 4: 267 | 1838 |
| Ipomoea macrocalyx | (Ruiz & Pav.) Choisy | Prodr. 9: 362 | 1845 |
| Ipomoea macrophylla | Choisy | Prodr. 9: 374 | 1845 |
| Ipomoea macropoda | Bojer | Hortus Maurit. 229 | 1837 |
| Ipomoea macrorhiza | Michx. | Fl. Bor.-Amer. 1: 141 | 1803 |
| Ipomoea macrorhiza | (L.) Roem. & Schult. | Syst. Veg. (ed. 15 bis) 4: 211 | 1819 |
| Ipomoea macrosepala | Brenan | Kew Bull. 4: 93 | 1949 |
| Ipomoea macrosiphon | Hallier f. | Bot. Jahrb. Syst. 30: 387 | 1901 |
| Ipomoea madrensis | S. Watson | Proc. Amer. Acad. Arts 23: 281 | 1888 |
| Ipomoea magniflora | O’Donell | Lilloa 26: 369?70, t. 7 | 1953 |
| Ipomoea magnifolia | Rusby | Mem. Torrey Bot. Club 6(1): 84 | 1896 |
| Ipomoea magnusiana | Schinz | ||
| Ipomoea magnusiana var. eenii | A. Meeuse | ||
| Ipomoea magnusiana var. magnusiana | |||
| Ipomoea mahonii | C.H. Wright | Gard. Chron. 33: 257 | 1903 |
| Ipomoea mairetii | Choisy | Prodr. 9: 374 | 1845 |
| Ipomoea malabarica | Roem. & Schult. | Syst. Veg. (ed. 15 bis) 4: 235 | 1819 |
| Ipomoea malpighipila | O’Donell | Lilloa 23: 448, t. 9?0 | 1950 |
| Ipomoea malpighipila var. malpighipila | |||
| Ipomoea maltratana | Standl. | Publ. Field Mus. Nat. Hist., Bot. Ser. 22(1): 46 | 1940 |
| Ipomoea malvaeoides | Meisn. | Fl. Bras. 7: 251 | 1869 |
| Ipomoea malvaeoides fo. apiculata | Chodat & Hassl. | Bull. Herb. Boissier, sér. 2, 5: 691 | 1905 |
| Ipomoea malvaeoides var. argentea | O’Donell | Lilloa 29: 179 | 1959 |
| Ipomoea malvaeoides var. heterophylla | Hallier f. | Bull. Herb. Boissier 7(App. 1): 52 | 1899 |
| Ipomoea malvaeoides var. integrifolia | Chodat & Hassl. | Bull. Herb. Boissier, sér. 2, 5: 690 | 1905 |
| Ipomoea malvaeoides fo. intermedia | Chodat & Hassl. | Bull. Herb. Boissier, sér. 2, 5: 690 | 1905 |
| Ipomoea malvaeoides var. lineariloba | Hallier | Bull. Herb. Boissier 7: 53 | 1899 |
| Ipomoea malvaeoides var. malvaeoides | |||
| Ipomoea malvaeoides var. nitida | (Griseb.) Hallier | Bull. Herb. Boissier 7: 52 | 1899 |
| Ipomoea malvaeoides var. ovata | Hallier f. | Bull. Herb. Boissier 7(App. 1): 52 | 1899 |
| Ipomoea malvaeoides var. uliginosa | Chodat & Hassl. | Bull. Herb. Boissier, sér. 2, 5: 691 | 1905 |
| Ipomoea malvaviscoides | Meisn. | Fl. Bras. 7: 284 | 1869 |
| Ipomoea malvifolia | Baker | ||
| Ipomoea marabensis | D.F. Austin & Secco | Bol. Mus. Paraense Em韑io Goeldi" | n.s. |
| Ipomoea maragniensis | Choisy | Prodr. 9: 351 | 1845 |
| Ipomoea marcellia | Meisn. | ||
| Ipomoea marginata | (Desr.) Verdc. | Kew Bull. 42(3): 658 | 1987 |
| Ipomoea marginata fo. candida | Das Das & Lakshmin. | J. Econ. Taxon. Bot. 24: 449 | 2000 |
| Ipomoea marginisepala | O’Donell | Lilloa 23: 490, t. 13 | 1950 |
| Ipomoea maritima | (Desr.) R. Br. | Prodr. 486 | 1810 |
| Ipomoea marlothii | Engl. | ||
| Ipomoea marmorata | Britt. & Rendle | Bot. Jahrb. Syst. 34: 36 | 1896 |
| Ipomoea marmorata subsp. marmorata | |||
| Ipomoea marshii | Steyerm. | ||
| Ipomoea martii | Meisn. | Fl. Bras. 7: 337, t. 96 | 1869 |
| Ipomoea martini | Léveillé, Augustin(e) Abel Hector | Repert. Spec. Nov. Regni Veg. 9(222-226): 453 | 1911 |
| Ipomoea martinicensis | (Jacq.) G. Mey. | Prim. Fl. Esseq. 98 | 1818 |
| Ipomoea mathewsiana | Kuntze | Revis. Gen. Pl. 2: 443 | 1891 |
| Ipomoea mattogrossensis | (Kuntze) K. Schum. | Just’s Bot. Jahresber. 26(1): 383 | 1900 |
| Ipomoea maurandioides | Meisn. | Fl. Bras. 7: 275 | 1869 |
| Ipomoea mauritiana | Jacq. | Pl. Hort. Schoenbr. 2: 39 | 1797 |
| Ipomoea mauritiana | Jacq. | Collectanea 4: 216 | 1790 or 1791 |
| Ipomoea maxima | Don ex Sweet | Hort. Brit. (ed. 2) 372 | 1830 |
| Ipomoea maxima fo. candida | Naik & Zate | 1998 | |
| Ipomoea maximiliani | Meisn. | Fl. Bras. 7: 285 | 1869 |
| Ipomoea mcphersonii | D.F. Austin | Taxon 45(1): 12 | 1996 |
| Ipomoea mcvaughii | McPherson | Contr. Univ. Michigan Herb. 14: 94 | 1980 |
| Ipomoea medium | (Choisy) Vatke | Linnaea 43: 509 | |
| Ipomoea megacarpa | Brandegee | Zo?5(10C): 218 | 1905 |
| Ipomoea megapotamica | Choisy | Prodr. 9: 375 | 1845 |
| Ipomoea megapotamica var. cordifolia | Hassl. | Repert. Spec. Nov. Regni Veg. 9: 157 | 1911 |
| Ipomoea melanosticta | G. Don | Gen. Hist. 4: 271 | 1838 |
| Ipomoea melanotricha | Brandegee | Univ. Calif. Publ. Bot. 4(19): 381?82 | 1913 |
| Ipomoea menispermaceae | Domin | Biblioth. Bot. 89(4): 535f. 177 | 1928 |
| Ipomoea merremioides | Alain | Revista Soc. Cub. Bot. 13: 8 | 1956 |
| Ipomoea mesenterioides | Hallier f. | Bull. Herb. Boissier 6: 544 | 1898 |
| Ipomoea mestecensis | House | Bot. Gaz. 43(6): 411 | 1907 |
| Ipomoea mestitlanica | Choisy | Prodr. 9: 389 | 1845 |
| Ipomoea mexicana | A. Gray | Syn. Fl. N. Amer. 2(1): 210 | 1878 |
| Ipomoea meyeri | (Spreng.) G. Don | Gen. Hist. 4: 275 | 1838 |
| Ipomoea micrantha | Hallier f. | Bull. Herb. Boissier 6: 541 | 1898 |
| Ipomoea micrantha var. hispida | Hallier f. | Bull. Herb. Boissier 6: 542 | 1898 |
| Ipomoea micrantha var. micrantha | |||
| Ipomoea microcalyx | Schulze-Menz | Notizbl. Bot. Gart. Berlin朌ahlem 14: 110 | 1938 |
| Ipomoea microdactyla | Griseb. | Cat. Pl. Cub. 204?05 | 1886 |
| Ipomoea microphylla | Roth | Nov. Pl. Sp. 112 | 1821 |
| Ipomoea microsepala | Benth. | Bot. Voy. Sulphur 136 | 1844 or 1845 |
| Ipomoea microsticta | Hallier f. | Bull. Herb. Boissier 7(5): 411?13 | 1899 |
| Ipomoea mina | (G. Don) Voss | Vilm. Blumeng鋜tn. ed. 3 710 | 1895 |
| Ipomoea minuta | R.E. Fr. | Nova Acta Regiae Soc. Sci. Upsal. 4: 113 | 1905 |
| Ipomoea minuta fo. adiantifolia | (Ooststr.) O’Donell | Lilloa 29: 193 | 1959 |
| Ipomoea minuta fo. minuta | |||
| Ipomoea minutiflora | (M. Martens & Galeotti) House | Muhlenbergia 5(5): 71 | 1909 |
| Ipomoea miquihuanensis | J.A. McDonald | Brittonia 39(1): 110, f. 2, C & D | 1987 |
| Ipomoea mirandina | (Pittier) O’Donell | Lilloa 26: 370 | 1953 |
| Ipomoea mitchelliae | Standl. | Publ. Field Mus. Nat. Hist., Bot. Ser. 8(1): 39 | 1930 |
| Ipomoea mojangensis | Vatke | Linnaea 43: 515 | 1882 |
| Ipomoea mollicoma | Miq. | Stirp. Surinam. Select. p. 123, t. 37 | 1850 or 1851 |
| Ipomoea mollis | (Kunth) G. Don | Gen. Hist. 4: 275 | 1838 |
| Ipomoea mollissima | (Zoll.) Hallier f. | ||
| Ipomoea mollissima var. glabrior | (Miq.) Boerl. | Fl. Ned. Ind. 2: 512 | 1859 |
| Ipomoea mombassana | Vatke | Linnaea 43: 515 | 1882 |
| Ipomoea monosperma | Sprengel ex Choisy | Prodr. 9: 360 | 1845 |
| Ipomoea montana | Moric. | Pl. Nouv. Amer. 44, t. 30 | 1838 |
| Ipomoea montecristina | Hada? | Folia Geobot. Phytotax. 5: 430 | 1970 |
| Ipomoea montevidensis | (Spreng.) G. Don | Gen. Hist. 4: 276 | 1838 |
| Ipomoea monticola | (Meisn.) O’Donell | Lilloa 26: 371 | 1953 |
| Ipomoea morelii | Duchass. & Walp. | Linnaea 23: 752 | 1850 or 1851 |
| Ipomoea morelii | Dammer | ||
| Ipomoea morongii | Britton | Ann. New York Acad. Sci. 7: 171 | 1893 |
| Ipomoea morsonii | Baker | Bull. Misc. Inform. Kew 1894: | 1894 |
| Ipomoea mucronata | Schery | Ann. Missouri Bot. Gard. 28(4): 463?64 | 1941 |
| Ipomoea muelleri | Benth. | ||
| Ipomoea ?multifida | (Raf.) Shinners | Sida 2(3): 265 | 1966 |
| Ipomoea multiflora | Roxb. | Fl. Ind., ed. 1820 2: 89 | 1824 |
| Ipomoea multisecta | Welw. | Apont. 589 | 1859 |
| Ipomoea muricata | Cav. | Icon. 5: 52, t. 478, f. 2 | 1799 |
| Ipomoea muricata | (L.) Jacq. | Pl. Hort. Schoenbr. 3: 40 | 1798 |
| Ipomoea muricata fo. alba | Woodson & Seibert | Ann. Missouri Bot. Gard. 24(2): 201 | 1937 |
| Ipomoea muricata fo. muricata | |||
| Ipomoea muricata var. villosa | Choisy | Prodr. 9: 353 | 1845 |
| Ipomoea muricatisepala | Matuda | Anales Inst. Biol. Univ. Nac. M閤ico 34: 124 | 1964 |
| Ipomoea murucoides | Roem. & Schult. | Syst. Veg. (ed. 15 bis) 4: 248 | 1819 |
| Ipomoea murucoides var. glabrata | A. Gray | Proc. Amer. Acad. Arts 22: 440 | 1887 |
| Ipomoea murucoides var. murucoides | |||
| Ipomoea mutabilis | Ker Gawl. | Bot. Reg. 1: t. 39 | 1815 |
| Ipomoea natans | Dinter & Suess. | Mitt. Bot. Staatssamml. M黱chen 4: 112 | 1952 |
| Ipomoea nationis | (Hook.) G. Nicholson | Ill. Dict. Gard. 2: 191 | 1885 |
| Ipomoea nealleyi | J.M. Coult. | Contr. U.S. Natl. Herb. 1(2): 45 | 1890 |
| Ipomoea neei | (Spreng.) O’Donell | Lilloa 29: 69 | 1959 |
| Ipomoea nelsonii | Rose | Contr. U.S. Natl. Herb. 1(9): 343?44 | 1895 |
| Ipomoea nematoloba | Urb. | Symb. Antill. 3: 349 | 1902 |
| Ipomoea nematophylla | Urb. | Symb. Antill. 5: 473 | 1908 |
| Ipomoea nephrophylla | Meisn. | Fl. Bras. 7: 219 | 1869 |
| Ipomoea neurocephala | Hallier f. | Jahrb. Hamburg. Wiss. Anst. 16(Beih. 3): 40 | 1899 |
| Ipomoea nicaraguensis | (Donn. Sm.) House | Bot. Gaz. 43(6): 409 | 1907 |
| Ipomoea nicoyana | House | Ann. New York Acad. Sci. 18(6): 231 | 1908 |
| Ipomoea nil | (L.) Roth | Catal. Bot. 1: 36 | 1797 |
| Ipomoea nil var. diversifolia | (Lindl.) Choisy | Prodr. 9: 343 | 1845 |
| Ipomoea nil var. himalaica | S.C. Johri | J. Econ. Taxon. Bot. 5(432): 1984 | 1819 |
| Ipomoea nil var. setosa | (Blume) Boerl. | Handl. Fl. Ned. Ind. 2(2): 511 | 1899 |
| Ipomoea nitens | Chodat & Hassl. | Bull. Herb. Boissier, sér. 2, 5: 689 | 1905 |
| Ipomoea nitida | Griseb. | Abh. K鰊igl. Ges. Wiss. G鰐tingen 24: 264 | 1879 |
| Ipomoea noctulifolia | McPherson | Contr. Univ. Michigan Herb. 14: 91 | 1980 |
| Ipomoea nuda | N.E. Br. | Trans. Bot. Soc. Edinburgh 20: 63 | 1894 |
| Ipomoea nuda | Peter | Nat. Pflanzenfam. 4(3): 31 | 1891 |
| Ipomoea nutans | Moc. & Sess?ex Choisy | Prodr. 9: 368 | 1845 |
| Ipomoea nyctaginea | Choisy | Prodr. 9: 369 | 1845 |
| Ipomoea nyctaginea var. cordifolia | Choisy | Prodr. 9: 369 | 1845 |
| Ipomoea nyctelea | L. | Sp. Pl. 1: 160 | 1753 |
| Ipomoea nymphaefolia | Blume | Bijdr. Fl. Ned. Ind. 719 | 1825 |
| Ipomoea nymphaeifolia | Griseb. | Cat. Pl. Cub. 203 | 1866 |
| Ipomoea oaxacana | Greenm. | Publ. Field Mus. Nat. Hist., Bot. Ser. 2(8): 336?37 | 1912 |
| Ipomoea oblonga | Benth. | Bot. Voy. Sulphur 133 | 1844 or 1845 |
| Ipomoea oblongata | E. Mey. ex Choisy | ||
| Ipomoea oblongifolia | (Hassl.) O’Donell | Lilloa 23: 493 | 1950 |
| Ipomoea obscura | (L.) Ker Gawl. | Bot. Reg. 3:pl. 239 | 1817 |
| Ipomoea obscura fo. concolor | Naik & Zate | 1998 | |
| Ipomoea obscura var. fragilis | (Choisy) A. Meeuse | Fl. Pl. Africa 31: t. 1222 | 1956 |
| Ipomoea obscura var. obscura | |||
| Ipomoea obscura var. sagittifolia | Verdc. | Kew Bull. 13: 210 | 1958 |
| Ipomoea obtusata | Griseb. | Cat. Pl. Cub. 202 | |
| Ipomoea obtusiloba | Meisn. | Fl. Bras. 7: 283 | 1869 |
| Ipomoea obtusiloba var. tridens | Meisn. | Fl. Bras. 7: 283 | 1869 |
| Ipomoea obvallatus | Spreng. | Syst. Veg. [Sprengel_] 1: 595 | 1825 or 1824 |
| Ipomoea ochracea | (Lindl.) G. Don | Gen. Hist. 4: 270 | 1837 |
| Ipomoea ochracea var. curtissii | (House) Stearn | Proc. Linn. Soc. Lond. 170: 145 | 1959 |
| Ipomoea ochracea var. ochracea | |||
| Ipomoea ochroleuca | Span. | Linnaea 15: 340 | 1841 |
| Ipomoea oculata | Huber | Cat. Gen. 1871&1872: 3 | 1871 |
| Ipomoea oenotherae | Hallier f. | Bot. Jahrb. Syst. 18: 125 | 1893 |
| Ipomoea oenotherae var. angustifolia | Verdc. | Kew Bull. 13: 200 | 1958 |
| Ipomoea oenotherae var. oenotherae | |||
| Ipomoea oenotheroides | A. Meeuse & Welman | in Fl. S. Afr. 28: 86 | 2000 |
| Ipomoea oleracea | Welw. | Ann. Conselho Ultramarino 1: 589 | 1859 |
| Ipomoea oligantha | Choisy | Prodr. 9: 380 | 1845 |
| Ipomoea ommaneyi | Rendle | ||
| Ipomoea ommannei | Rendle | ||
| Ipomoea oocarpa | Benth. | Bot. Voy. Sulphur 136 | 1844 or 1845 |
| Ipomoea ophiodes | Standl. & Steyerm. | Publ. Field Mus. Nat. Hist., Bot. Ser. 23(2): 82?3 | 1944 |
| Ipomoea opulifolia | Rusby | Bull. Torrey Bot. Club 26: 150 | 1899 |
| Ipomoea oranensis | O’Donell | Lilloa 14: 185, t. 9 | 1948 |
| Ipomoea orbicularis | Elliott | Sketch Bot. S. Carolina 1(3): 257 | 1817 |
| Ipomoea oreophila | House | Ann. New York Acad. Sci. 18(6): 195 | 1908 |
| Ipomoea orizabensis | (G. Pelletan) Ledeb. ex Steud. | Nomencl. Bot. (ed. 2) 818 | 1841 |
| Ipomoea orizabensis var. austromexicana | J.A. McDonald | Lundellia 4: 86?7, f. 4a杄 | 2001 |
| Ipomoea orizabensis var. collina | (House) J.A. McDonald | Lundellia 4: 87, f. 3 | 2001 |
| Ipomoea orizabensis var. novogaliciana | J.A. McDonald | Lundellia 4: 87?8, f. 4B, F | 2001 |
| Ipomoea orizabensis var. orizabensis | |||
| Ipomoea ornithopoda | B.L. Rob. | Proc. Amer. Acad. Arts 27: 183 | 1893 |
| Ipomoea ortegae | Poir. | Encycl., Suppl. 4: 633 | 1816 |
| Ipomoea osyrensis | Roth | Nov. Pl. Sp. 117 | 1821 |
| Ipomoea otjikangensis | Pilg. & Dinter | ||
| Ipomoea ovalifolia | Choisy | Mém. Soc. Phys. Genève 6(2): 449 | 1834 |
| Ipomoea ovalifolia var. ovalifolia | |||
| Ipomoea ovalifolia var. pubescens | Choisy | Mém. Soc. Phys. Genève 6: 449 | 1834 |
| Ipomoea ovalifolia var. tomentosa | Choisy | Mém. Soc. Phys. Genève 6: 449 | 1834 |
| Ipomoea ovata | E. Mey. ex Rendle | ||
| Ipomoea owariensis | P. Beauv. | Fl. Oware 2: 41, t. 82 | 1816 |
| Ipomoea oxyphylla | Baker | Bull. Misc. Inform. Kew 1894: 71 | 1894 |
| Ipomoea pachypus | Pilg. | ||
| Ipomoea padillae | O’Donell | Lilloa 29: 207 | 1959 |
| Ipomoea painteri | House | Muhlenbergia 3(3): 41, t. 3 | 1907 |
| Ipomoea pallida | Santapau & Patel | Trans. Bose Res. Inst. Calcutta 22: 38 | 1958 |
| Ipomoea palmata | Forssk. | Fl. Aegypt.-Arab. 43?4 | 1775 |
| Ipomoea palmata var. gracillima | Collett & Hemsl. | J. Linn. Soc., Bot. 31: 97 | 1890 |
| Ipomoea palmata var. indica | Hallier f. | ||
| Ipomoea palmata var. semineglabra | Blatt. & Hallb. | J. Bombay Nat. Hist. Soc. 26: 546 | 1919 |
| Ipomoea palmeri | S. Watson | Proc. Amer. Acad. Arts 24: 63 | 1889 |
| Ipomoea palmeri | Hallier | ||
| Ipomoea palmeri var. platyphylla | Fernald | Proc. Amer. Acad. Arts 33(5): 90 | 1897 |
| Ipomoea paludosa | O’Donell | Lilloa 23: 495, t. 15 | 1950 |
| Ipomoea paludosa var. paludosa | |||
| Ipomoea paludosa var. uliginosa | (Chodat & Hassl.) O’Donell | Lilloa 26: 373 | 1953 |
| Ipomoea palustris | (Urb.) Urb. | Symb. Antill. 9: 423 | 1925 |
| Ipomoea pandurata | Conz. & L.C. Sm. | Fl. Sin髉. Mex. 3: 48 | 1895 |
| Ipomoea pandurata | (L.) G. Mey. | Prim. Fl. Esseq. 100 | 1818 |
| Ipomoea pandurata var. hastata | Chapm. | Fl. South. U.S. 343 | 1860 |
| Ipomoea paniculata | (L.) R. Br. | Prodr. 486 | 1810 |
| Ipomoea paniculata | Burm. f. | Fl. Indica 50, pl. 21, f. 3 | 1768 |
| Ipomoea paniculata var. heterophylla | Kuntze | Revis. Gen. Pl. 2: 445 | 1891 |
| Ipomoea paniculatus | R. Br. | Prodr. 486 | 1810 |
| Ipomoea paolii | Chiov. | Res. Sci. Somal. Ital. 1: 124, t. 14 | 1916 |
| Ipomoea paparin | Poir. | ||
| Ipomoea papilio | Hallier f. | ||
| Ipomoea papiru | Ruiz & Pav. | Fl. Peruv. 2: 11, t. 120, f. a | 1799 |
| Ipomoea papiru var. subtriloba | (Ruiz & Pav.) Pers. | Syn. Pl. 1: 185 | 1805 |
| Ipomoea paposana | Phil. | Viaje Des. Atacama 210 | 1860 |
| Ipomoea paraensis | Peter | Nat. Pflanzenfam. IV(3a): 30 | |
| Ipomoea paraguariensis | Peter | Nat. Pflanzenfam. IV(3a): 29 | 1897 or 1891 |
| Ipomoea parasitica | (Kunth) G. Don | Gen. Hist. 4: 275 | 1838 |
| Ipomoea pareiraefolia | G. Don | Gen. Syst. 4: 273 | |
| Ipomoea parkeri | Choisy | Prodr. 9: 381 | 1845 |
| Ipomoea parkeri var. subsericea | Meisn. | Fl. Bras. 7: 284 | 1869 |
| Ipomoea parviflora | Sess?& Moc. | Fl. Mexic. 1: 42 | 1893 |
| Ipomoea parviflora | Vahl | Symb. Bot. 3: 34 | 1794 |
| Ipomoea passifloroides | House | Ann. New York Acad. Sci. 18(6): 230 | 1908 |
| Ipomoea patens | (A. Gray) House | Ann. New York Acad. Sci. 18(6): 237 | 1908 |
| Ipomoea patula | Choisy | Prodr. 9: 368 | |
| Ipomoea patula var. monticola | Meisn. | ||
| Ipomoea patula var. patula | |||
| Ipomoea patula var. villosa | Meisn. | Fl. Bras. 7: 241 | 1869 or 1869 |
| Ipomoea pauciflora | M. Martens & Galeotti | Bull. Acad. Roy. Sci. Bruxelles 12(2): 266 | 1845 |
| Ipomoea pauciflora subsp. pauciflora | |||
| Ipomoea pauciflora subsp. vargasiana | (O’Donell) McPherson | Ann. Missouri Bot. Gard. 68(4): 537 | 1981 |
| Ipomoea paulistana | Stellfeld | Tribuna Farm. 13: 86 | 1945 |
| Ipomoea paulistana | O’Donell | Dusenia 3: 278, t. 15 | 1952 |
| Ipomoea pavonii | Choisy | Prodr. 9: 390 | 1845 |
| Ipomoea pearceana | Kuntze | Revis. Gen. Pl. 2: 443 | 1891 |
| Ipomoea peckoltii | Meisn. | Fl. Bras. 7: 268 | 1869 |
| Ipomoea pedata | Poiteau ex Choisy | ||
| Ipomoea pedatisecta | M. Martens & Galeotti | Bull. Acad. Roy. Sci. Bruxelles 12(2): 265 | 1845 |
| Ipomoea pedicellaris | Benth. | Bot. Voy. Sulphur 135 | 1844 or 1845 |
| Ipomoea peduncularis | Bertol. | Novi Comment. Acad. Sci. Inst. Bononiensis 4: 408?09, t. 37 | 1840 |
| Ipomoea peduncularis | Bertol. | Fl. Guatimal. 8, t. 2 | 1840 |
| Ipomoea pellita | Hallier f. | ||
| Ipomoea peltata | (L.) Choisy | Mém. Soc. Phys. Genève 6: 452 | 1834 |
| Ipomoea pendula | (Silva Manso) Stellfeld | Tribuna Farm. 13: 86 | 1945 |
| Ipomoea peninsularis | Brandegee | Zo?5: 168 | 1903 |
| Ipomoea pentadactylis | Choisy | Mém. Soc. Phys. Genève 6: 471 | 1833 |
| Ipomoea pentaphylla | Cav. | Icon. 3: 29 | 1794 |
| Ipomoea pentaphylla | (L.) Jacq. | Collectanea 2: 297 | 1788 |
| Ipomoea peredoi | O’Donell | Lilloa 30: 44, f. 1 | 1960 |
| Ipomoea perichnoa | Urb. | Symb. Antill. 9: 426 | 1925 |
| Ipomoea perlonga | B.L. Rob. | Proc. Amer. Acad. Arts 29: 319?20 | 1894 |
| Ipomoea perpartita | McPherson | Contr. Univ. Michigan Herb. 14: 94 | 1980 |
| Ipomoea perplexa | L.O. Williams | Fieldiana, Bot. 32(12): 193 | 1970 |
| Ipomoea perrieri | Deroin | Bull. Mus. Natl. Hist. Nat., B, Adansonia, s閞. 4 15(1?): 78 | 1993 |
| Ipomoea perryana | Duchass. & Walp. | Linnaea 23: 751?52 | 1850 or 1851 |
| Ipomoea peruviana | O’Donell | Bol. Soc. Peruana Bot. 1: 4 | 1948 |
| Ipomoea pes-caprae | (L.) Sweet | Hort. Suburb. Lond. 35 | 1818 |
| Ipomoea pes-caprae | (L.) R. Br. | Narr. Exped. Zaire 477 | 1818 |
| Ipomoea pes-caprae | Roth | Nov. Pl. Sp. 109 | 1821 |
| Ipomoea pes-caprae var. arenaria | Damm. in Engl. | Pflanzenw. Ost-Afrikas C: 332 | 1895 |
| Ipomoea pes-caprae var. biloba | Hallier f. | Annuario Reale Ist. Bot. Roma 7: 231 | 1898 |
| Ipomoea pes-caprae subsp. brasiliensis | (L.) Ooststr. | Blumea 3(3): 533 | 1940 |
| Ipomoea pes-caprae var. brasiliensis | (L.) A. St.-Hil. | ||
| Ipomoea pes-caprae var. emarginata | Hallier f. | Bull. Soc. Roy. Bot. Belgique 37: 332 | 1898 |
| Ipomoea pes-caprae var. heterosepala | Chodat & Hassl. | Bull. Herb. Boissier, sér. 2, 5: 692 | 1905 |
| Ipomoea pes-caprae var. perunkulamensis | P.Umam. & P. Daniel | J. Econ. Taxon. Bot. 23: 691 | 1999 |
| Ipomoea pes-caprae subsp. pes-caprae | |||
| Ipomoea pes-caprae var. pes-caprae | |||
| Ipomoea pestigridis | L. | ||
| Ipomoea pestigridis var. capitellata | Cl. | ||
| Ipomoea pes-tigridis | L. | Sp. Pl. 1: 162 | 1753 |
| Ipomoea pes-tigridis var. africana | Hallier f. | Bull. Herb. Boissier 6: 539 | 1898 |
| Ipomoea pes-tigridis var. capitella | Clarke | ||
| Ipomoea pes-tigridis var. capitellata | C.B. Clarke | Fl. Brit. India 4: 204 | 1883 |
| Ipomoea pes-tigridis var. hepaticifolia | C.B. Clarke | Fl. Brit. India 4: 204 | 1883 |
| Ipomoea pes-tigridis var. indica | Hallier f. | Bull. Herb. Boissier 6: 539 | 1898 |
| Ipomoea pes-tigridis var. longibracteata | Vatke | Linnaea 43: 512 | 1882 |
| Ipomoea pes-tigridis var. pes-tigridis | |||
| Ipomoea pes-tigridis var. strigosa | Rendle | Fl. Trop. Afr. 4(2): 159 | 1905 |
| Ipomoea pes-tigridis fo. subintegrifolia | Roberty | Bull. Inst. Fran? Afrique Noire 16: 1010 | 1954 |
| Ipomoea petaloidea | Choisy | Mém. Soc. Phys. Genève 6: 451 | 1833 |
| Ipomoea petaloidea var. pauciflora | C.B. Clarke | ||
| Ipomoea peteri | (Kuntze) Staples & Govaerts | Phytologia 97(3): 220 | 2015 |
| Ipomoea petiolaris | G. Don | Gen. Hist. 4: 275 | 1838 |
| Ipomoea petrophila | House | Bot. Gaz. 43(6): 408 | 1907 |
| Ipomoea petunioides | Baker | ||
| Ipomoea pharbitiformis | Baker | Kew Bull. 1895: 291 | 1895 |
| Ipomoea philippinensis | Choisy | Mém. Soc. Phys. Genève 6: 475 | 1833 |
| Ipomoea philipsonii | O’Donell | Lilloa 26: 378, t. 11 | 1953 |
| Ipomoea philomega | (Vell.) House | Ann. New York Acad. Sci. 18(6): 246 | 1908 |
| Ipomoea phoenicea | (Roxb.) Choisy | Mém. Soc. Phys. Genève 6: 433 | 1833 |
| Ipomoea phoenicea | Roxb. | Fl. Indica (ed. Carey) 2: 92 | 1824 |
| Ipomoea phyllomega | House | Ann. New York Acad. Sci. 18: 246 | 1908 |
| Ipomoea phylloneura | Baker | J. Linn. Soc., Bot. 21: 426 | 1895 or 1895 |
| Ipomoea pierrei | Gagnep. | ||
| Ipomoea pileata | Roxb. | Fl. Ind., ed. 1820 2: 94 | 1824 |
| Ipomoea pilosa | Sweet | Hort. Brit. 289 | 1827 |
| Ipomoea pilosa | Cav. | Icon. 4: 11 t. 323 | 1797 |
| Ipomoea pilosa | Houtt. | Nat. Hist. 2(7): 573, t. 42, f. 2 | 1777 |
| Ipomoea pilossissima | M. Martens & Galeotti | Bull. Acad. Roy. Sci. Bruxelles 12(2): 264 | 1845 |
| Ipomoea pinifolia | Meisn. | Fl. Bras. 7: 250 | 1869 |
| Ipomoea pinnata | Hochst. ex Choisy | Prodr. 9: 353 | 1845 |
| Ipomoea pinnatifida | (Kunth) G. Don | Gen. Hist. 4: 280 | 1838 |
| Ipomoea pinosia | Alain | Revista Soc. Cub. Bot. 13: 60 | 1957 |
| Ipomoea pintoi | O’Donell | Lilloa 26: 380, t. 12 | 1953 |
| Ipomoea piresii | O’Donell | Arq. Mus. Paranaense 9: 229 | 1952 |
| Ipomoea pitoniana | Urb. | Repert. Spec. Nov. Regni Veg. 24: 10 | 1927 |
| Ipomoea pittieri | O’Donell | Lilloa 23: 499, t. 2 | 1950 |
| Ipomoea piurensis | O’Donell | Lilloa 26: 382?84, t. 13, f. 1 | 1953 |
| Ipomoea piurensis fo. rosea | O’Donell | Lilloa 26: 383 | 1953 |
| Ipomoea plantaginea | Hallier f. | ||
| Ipomoea platanifolia | (Vahl) Roem. & Schult. | Syst. Veg. (ed. 15 bis) 4: 220 | 1819 |
| Ipomoea platensis | Ker Gawl. | Bot. Reg. 4: 333 | 1818 |
| Ipomoea platensis var. erecta | Hassl. | Repert. Spec. Nov. Regni Veg. 9: 155 | 1911 or 1911 |
| Ipomoea platensis var. quinque-partita | Hassl. | Repert. Spec. Nov. Regni Veg. 9: 154 | 1911 |
| Ipomoea platensis var. subnovem-partita | Hassl. | Repert. Spec. Nov. Regni Veg. 9: 155 | 1911 |
| Ipomoea platensis var. subseptem-partita | Hassl. | Repert. Spec. Nov. Regni Veg. 9: 154 | 1911 |
| Ipomoea platyclada | Urb. | Symb. Antill. 9(2): 245 | 1924 |
| Ipomoea plebeia | R. Br. | Prodr. 484 | 1810 |
| Ipomoea plebeia subsp. africana | A. Meeuse | Bothalia 6: 723 | 1958 |
| Ipomoea plebeia subsp. indica | Verdc. | Kew Bull. 13: 200 | 1958 |
| Ipomoea plicata | Urb. | Ann. New York Acad. Sci. 18(6): 226 | 1908 |
| Ipomoea plumieriana | House | Bot. Gaz. 43(6): 413 | 1907 |
| Ipomoea plummerae | A. Gray | Syn. Fl. N. Amer. (ed. 2) 2(1): 434 | 1886 |
| Ipomoea plummerae fo. adiantifolia | Ooststr. | Recueil Trav. Bot. N閑rl. 30: 210 | 1933 |
| Ipomoea plummerae var. cuneifolia | (A. Gray) J.F. Macbr. | Publ. Field Mus. Nat. Hist., Bot. Ser. 11(1): 4 | 1931 |
| Ipomoea plummerae var. cupulata | J.A. McDonald | Harvard Pap. Bot. 6: 115 | 1995 |
| Ipomoea plummerae var. plummerae | |||
| Ipomoea plummerae fo. rhombifolia | Ooststr. | Recueil Trav. Bot. N閑rl. 33: 221 | 1936 |
| Ipomoea plummerae fo. typica | Ooststr. | Recueil Trav. Bot. N閑rl. 30: 210 | 1933 |
| Ipomoea pohlii | Choisy | ||
| Ipomoea polpha | R.W. Johnson | ||
| Ipomoea polyantha | Miq. | Fl. Ned. Ind. 2: 613 | 1857 |
| Ipomoea polyanthes | Roem. & Schult. | Syst. Veg. (ed. 15 bis) 4: 234 | 1819 |
| Ipomoea polycarpa | (Kunth) G. Don | Gen. Hist. 4: 270 | 1838 |
| Ipomoea polymorpha | Griseb. | ||
| Ipomoea polymorpha | Roem. & Schult. | Syst. Veg. (ed. 15 bis) 4: 254 | 1819 |
| Ipomoea polymorpha fo. argentea | Hassl. | Repert. Spec. Nov. Regni Veg. 9: 155 | 1911 |
| Ipomoea polymorpha var. calvescens | Meisn. | ||
| Ipomoea polymorpha fo. canescens | Hassl. | Repert. Spec. Nov. Regni Veg. 9: 155 | 1911 |
| Ipomoea polymorpha var. delphinioides | Meisn. | Fl. Bras. 7: 252 | 1869 |
| Ipomoea polymorpha var. discolor | Hassl. | Repert. Spec. Nov. Regni Veg. 9: 155 | 1911 |
| Ipomoea polymorpha var. elliptica | Hassl. | Repert. Spec. Nov. Regni Veg. 9: 155 | 1911 |
| Ipomoea polymorpha var. glabra | Griseb. | Abh. K鰊igl. Ges. Wiss. G鰐tingen 24: 264 | 1879 |
| Ipomoea polymorpha var. heteromorpha | Meisn. | Fl. Bras. 7: 252 | 1869 |
| Ipomoea polymorpha fo. sericea | Hassl. | Repert. Spec. Nov. Regni Veg. 9: 155 | 1911 |
| Ipomoea populina | House | Ann. New York Acad. Sci. 18(6): 226 | 1908 |
| Ipomoea poranoides | C.B. Clarke | Fl. Brit. India 4: 208 | 1883 |
| Ipomoea portobellensis | Beurl. | Kongl. Vetensk. Acad. Handl. 40: 139 | 1854 or 1856 |
| Ipomoea portoricensis | (Spreng.) G. Don | Gen. Hist. 4: 278 | 1838 |
| Ipomoea potentilloides | Meisn. | Fl. Bras. 7: 230 | 1869 |
| Ipomoea praecana | House | Ann. New York Acad. Sci. 18(6): 227 | 1908 |
| Ipomoea praecox | McPherson & Meacham | Contr. Univ. Michigan Herb. 14: 85 | 1980 |
| Ipomoea praecox | C. Wright | Anales Acad. Ci. Med. Habana 7: 46 | 1870 |
| Ipomoea praematura | Eckenw. | Brittonia 41: 75?9 | 1989 |
| Ipomoea praetermissa | Rendle | Bot. Jahrb. Syst. 39: 56 | 1901 |
| Ipomoea pringlei | A. Gray | Proc. Amer. Acad. Arts 22: 307 | 1887 |
| Ipomoea prismatosyphon | Welw. | Apont. 585 | 1859 |
| Ipomoea prismatosyphon var. prismatosyphon | |||
| Ipomoea prismatosyphon var. trifida | Verdc. | Kew Bull. 13: 214 | 1958 |
| Ipomoea procumbens | Mart. & Choisy | Prodr. 9: 351 | 1845 |
| Ipomoea procumbens var. elliptica | Chodat & Hassl. | Bull. Herb. Boissier, sér. 2, 5: 692 | 1905 |
| Ipomoea procumbens var. longepedunculata | Chodat & Hassl. | Bull. Herb. Boissier, sér. 2, 5: 692 | 1905 |
| Ipomoea procurrens | Meisn. | Fl. Bras. 7: 254 | 1869 |
| Ipomoea procurrens var. pilosula | Chodat & Hassl. | Bull. Herb. Boissier, sér. 2, 5: 692 | 1905 |
| Ipomoea prostrata | Meisn. | ||
| Ipomoea prostrata var. longepedunculata | Chodat & Hassl. | Bull. Herb. Boissier, sér. 2, 5: 692 | 1905 |
| Ipomoea proxima | M. Martens & Galeotti | Bull. Acad. Roy. Sci. Bruxelles 12(2): 268 | 1845 |
| Ipomoea pruinosa | McPherson | Contr. Univ. Michigan Herb. 14: 88 | 1980 |
| Ipomoea pseudocalystegia | Hassl. | Repert. Spec. Nov. Regni Veg. 9: 151 | 1911 |
| Ipomoea pseudolinum | Pittier | J. Wash. Acad. Sci. 17: 187 | 1927 |
| Ipomoea pseudomalvaeoides | Chodat & Hassl. | Bull. Herb. Boissier, sér. 2, 5: 691 | 1905 |
| Ipomoea pseudomalvaeoides fo. palmata | Chodat & Hassl. | Bull. Herb. Boissier, sér. 2, 5: 691 | 1905 |
| Ipomoea pseudomalvaeoides fo. sericea | Chodat & Hassl. | Bull. Herb. Boissier, sér. 2, 5: 691 | 1905 |
| Ipomoea pseudomalvaeoides fo. trispathulata | Chodat & Hassl. | Bull. Herb. Boissier, sér. 2, 5: 691 | 1905 |
| Ipomoea pseudomarginata | Deroin | Bull. Mus. Natl. Hist. Nat., B, Adansonia, s閞. 4 15(1?): 80 | 1993 |
| Ipomoea pseudomina | K. Schum. | Just’s Bot. Jahresber. 26(1): 383 | 1900 |
| Ipomoea pseudoracemosa | McPherson | Contr. Univ. Michigan Herb. 14: 88 | 1980 |
| Ipomoea pterodes | Seem. | Bot. Voy. Herald 171 | 1854 |
| Ipomoea pterodes | Choisy | Prodr. 9: 361 | 1845 |
| Ipomoea pterygocaulos | Choisy | Prodr. 9: 381 | 1845 |
| Ipomoea pubescens | Lam. | Tabl. Encycl. 1(2[2_]): 465 | 1791 or 1793 |
| Ipomoea pudibunda | (Lindl.) G. Don | Gen. Hist. 4: 276 | 1838 |
| Ipomoea pulchella | (Kunth) G. Don | Gen. Hist. 4: 276 | 1837 |
| Ipomoea pulchella | Roth | Nov. Pl. Sp. 115 | 1821 |
| Ipomoea pulchella var. lineariloba | Hassl. | Repert. Spec. Nov. Regni Veg. 9: 158 | 1911 |
| Ipomoea pulcherrima | Ooststr. | Recueil Trav. Bot. N閑rl. 30: 206 | 1933 |
| Ipomoea pulchra | Blume | Bijdr. Fl. Ned. Ind. 716 | 1825 |
| Ipomoea pulneyensis | Bedd. | Trans. Linn. Soc. London, Bot. 25: 22 | 1865 |
| Ipomoea pumila | Span. | Linnaea 15: 341 | 1841 |
| Ipomoea punctata | C. Wright | Anales Acad. Ci. Med. Habana 7: 44?5 | 1870 |
| Ipomoea puncticulata | Benth. | Bot. Voy. Sulphur 136 | 1844 or 1845 |
| Ipomoea purga | (Wender.) Hayne | Getreue Darstell. Gew. 12: 5 | 1833 |
| Ipomoea purpurea | (L.) Roth | Bot. Abh. Beobacht. 27 | 1787 |
| Ipomoea purpurea | (L.) Lam. | Tabl. Encycl. 1(2[2_]): 466 | 1791 or 1793 |
| Ipomoea purpurea var. diversifolia | (Lindl.) O’Donell | Lilloa 26: 385?89, t. 14, f. 1 | 1953 |
| Ipomoea purpurea var. purpurea | |||
| Ipomoea purpusii | House | Ann. New York Acad. Sci. 18(6): 248 | 1908 |
| Ipomoea purshii | G. Don | Hort. Brit. (ed. 3) 483 | 1839 |
| Ipomoea pusilla | Brandegee | Univ. Calif. Publ. Bot. 4(19): 382 | 1913 |
| Ipomoea pyrenea | Taub. | ||
| Ipomoea pyrophila | A. Chev. | Bull. Mus. Natl. Hist. Nat., s閞. 2 5: 235 | 1933 |
| Ipomoea quadrangularis | Bojer ex Choisy | Prodr. 9: 387 | 1845 |
| Ipomoea quamoclit | L. | Sp. Pl. 1: 159?60 | 1753 |
| Ipomoea quesadana | Standl. | Publ. Field Mus. Nat. Hist., Bot. Ser. 22(2): 99 | 1940 |
| Ipomoea quinata | R. Br. | Prodr. 486 | 1810 |
| Ipomoea quinata | G. Don | Gen. Hist. 4: 260 | 1838 |
| Ipomoea quinquefolia | Griseb. | Fl. Brit. W. I. 468 | 1864 or 1862 |
| Ipomoea quinquefolia | L. | Sp. Pl. 1: 162 | 1753 |
| Ipomoea quinquefolia var. pubescens | Baker | ||
| Ipomoea racemigera | F. Muell. | Trans. & Proc. Roy. Soc. South Australia 13: 108 | 1890 or 1890 |
| Ipomoea racemosa | Poir. | Encycl., Suppl. 4: 633 | 1816 |
| Ipomoea radicans | Blume | 1826 | |
| Ipomoea radicans | Bertero ex Choisy | Prodr. 9: 387 | 1845 |
| Ipomoea ramboi | O’Donell | Lilloa 30: 48, f. 2 | 1960 |
| Ipomoea ramonii | Choisy | Prodr. 9: 380 | 1845 |
| Ipomoea ramosissima | (Poir.) Choisy | Prodr. 9: 377 | 1845 |
| Ipomoea ramosissima subvar. hirsuta | Hallier | Jahrb. Hamburg. Wiss. Anst. 16: 45 | 1899 |
| Ipomoea ramosissima fo. rosea | (Hallier) O’Donell | Arq. Mus. Paranaense 9: 231, t. 10 | 1952 |
| Ipomoea ramosissima var. rosea | Hallier | Jahrb. Hamburg. Wiss. Anst. 16: 45 | 1899 |
| Ipomoea randii | Rendle | ||
| Ipomoea regnellii | Meisn. | Fl. Bras. 7: 266 | 1869 |
| Ipomoea reidellii | C.F.W. Meissn. | Fl. Bras. 7: 265 | 1869 |
| Ipomoea reniformis | (Roxb.) Choisy | Mém. Soc. Phys. Genève 6: 446 | 1833 |
| Ipomoea repanda | Jacq. | Enum. Syst. Pl. 13 | 1760 |
| Ipomoea repanda var. microdactyla | (Griseb.) D. Powell | J. Arnold Arbor. 60(2): 259 | 1979 |
| Ipomoea repanda var. repanda | 1979 | ||
| Ipomoea repandula | Baker | ||
| Ipomoea repens | (L.) Lam. | Tabl. Encycl. 1: 467 | 1791 |
| Ipomoea repens | Roth | Nov. Pl. Sp. 110 | 1821 |
| Ipomoea repens fo. deltoidea | Roberty | Bull. Inst. Fran? Afrique Noire 16: 1011 | 1954 |
| Ipomoea repens fo. suffrutescens | Roberty | Bull. Inst. Fran? Afrique Noire 16: 1011 | 1954 |
| Ipomoea reptans | Poir. | Encycl., Suppl. 3(2): 460 | 1814 |
| Ipomoea reticulata | O’Donell | Lilloa 26: 389?91, t. 15 | 1953 |
| Ipomoea retropilosa | (Pittier) D.F. Austin | Ann. Missouri Bot. Gard. 64(2): 337 | 1977 or 1978 |
| Ipomoea rhodesiana | Rendle | ||
| Ipomoea rhodocalyx | A. Gray | Proc. Amer. Acad. Arts 22: 439?40 | 1887 |
| Ipomoea rhomboidea | House | Ann. New York Acad. Sci. 18(6): 245 | 1908 |
| Ipomoea rhyncorhiza | Dalzell | Hooker’s J. Bot. Kew Gard. Misc. 3: 179 | 1851 |
| Ipomoea riedeliana | Oliv. | Hooker’s Icon. Pl. 5: , t. 1424 | 1883 |
| Ipomoea riedelii | Meisn. | Fl. Bras. 7: 265 | 1869 |
| Ipomoea riparia | G. Don | Gen. Hist. 4: 265 | 1838 |
| Ipomoea riparum | Standl. & L.O. Williams | Ceiba 1(3): 163 | 1950 |
| Ipomoea robertsiana | Rendle | ||
| Ipomoea robinsonii | House | Ann. New York Acad. Sci. 18(6): 257 | 1908 |
| Ipomoea robusta | Urb. | Symb. Antill. 9: 424 | 1925 |
| Ipomoea rojasii | Hassl. | Repert. Spec. Nov. Regni Veg. 9: 152 | 1911 |
| Ipomoea rosea | Choisy | ||
| Ipomoea rosea var. pluripartita | Hassl. | Trab. Mus. Farmacol. 21: 98 | 1909 |
| Ipomoea roseana | House | Muhlenbergia 3(3): 43 | 1907 |
| Ipomoea rostrata | Peter | Nat. Pflanzenfam. IV(3a): 30 | 1897 or 1891 |
| Ipomoea rotundifolia | Germann | Verz. Pfl. Bot. Gart. Kais. Univ. Dorpat. 1807: 75 | 1807 |
| Ipomoea rotundifolia | (Schumach. & Thonn.) G. Don | Gen. Hist. 4: 265 | 1837 |
| Ipomoea rotundisepala | Hayata | J. Coll. Sci. Imp. Univ. Tokyo 30(1): 206?07 | 1911 |
| Ipomoea roxburghii | Sweet | Hort. Brit. (ed. 2) 289 | 1826 |
| Ipomoea rubella | House | Bot. Gaz. 43: 414 | 1907 |
| Ipomoea rubens | Choisy | Mém. Soc. Phys. Genève 6(2): 463?64 | 1834 |
| Ipomoea ruber | (Vahl) Millsp. | Publ. Field Columb. Mus., Bot. Ser. 2(1): 86 | 1900 |
| Ipomoea rubra | (Vahl) Millsp. | Publ. Field Columb. Mus., Bot. Ser. 2(1): 86 | 1900 |
| Ipomoea rubra var. albo-flavida | Urb. | Symb. Antill. 3: 345 | 1902 |
| Ipomoea rubra var. palustris | Urb. | Symb. Antill. 3: 345 | 1902 |
| Ipomoea rubra var. rubra | |||
| Ipomoea rubriflora | O’Donell | Lilloa 29: 79 | 1959 |
| Ipomoea rubrinervia | Goebel | ||
| Ipomoea rubrocaerulea | Hook. | Bot. Mag. 8: t. 3297 | 1834 |
| Ipomoea rubro-caerulea | Hook. | Bot. Mag. 61: , t. 3297 | 1834 |
| Ipomoea rubrocincta | Urb. | Symb. Antill. 3(2): 347 | 1902 |
| Ipomoea rubrocincta var. brachyloba | Urb. | Symb. Antill. 7(3): 341 | 1911-1913 or 1912 |
| Ipomoea rubrocincta var. rubrocincta | |||
| Ipomoea rubro-viridis | Baker | J. Linn. Soc., Bot. 22: 507 | 1886 |
| Ipomoea ruderaria | (Kunth) G. Don | Gen. Hist. 4: 267 | 1838 |
| Ipomoea rudolphii | Roem. & Schult. | Syst. Veg. (ed. 15 bis) 4: 222 | 1819 |
| Ipomoea rugosa | Choisy | Mém. Soc. Phys. Genève 6: 446 | 1834 |
| Ipomoea rumicifolia | Choisy | Mém. Soc. Phys. Genève 6: 447 | 1834 |
| Ipomoea rupicola | House | Ann. New York Acad. Sci. 18(6): 230?31 | 1908 |
| Ipomoea ruyssenii | A. Chev. | Rev. Int. Bot. Appl. Agric. Trop. 30: 370, T. 13 | 1950 |
| Ipomoea rzedowskii | E. Carranza, Zamudio & Murguia | Acta Bot. Mex. 45: 32, f. 1? | 1998 |
| Ipomoea sabulosa | House | Ann. New York Acad. Sci. 18(6): 228 | 1908 |
| Ipomoea sabulosa var. hirtella | House | Ann. New York Acad. Sci. 18(6): 228 | 1908 |
| Ipomoea sabulosa var. mollicella | House | Ann. New York Acad. Sci. 18(6): 228 | 1908 |
| Ipomoea sabulosa var. sabulosa | |||
| Ipomoea saccata | Hallier f. | ||
| Ipomoea sagittata | Cav. | Icon. 2: 4, t. 107 | 1793 |
| Ipomoea sagittata | Poir. | Voy. Barbarie 2: 122?23 | 1789 |
| Ipomoea sagittata | Sess?& Moc. ex Choisy | Prodr. 9: 376 | 1845 |
| Ipomoea sagittata | Lam. | Tabl. Encycl. 1: 466 | 1791 or 1793 |
| Ipomoea sagittifer | (Kunth) G. Don | Gen. Hist. 4: 273 | 1838 |
| Ipomoea sagittifolia | (Michx.) Ker Gawl. | Bot. Reg. 6: t. 437 | 1820 |
| Ipomoea sagittifolia | Hochr. | Fl. Indica 50, t. 18, f. 2 | 1768 |
| Ipomoea sagittula | House | Ann. New York Acad. Sci. 18(6): 244 | 1908 |
| Ipomoea saintronanensis | R.W. Johnson | Austrobaileya 2(3): 222 | 1986 |
| Ipomoea salicifolia | Roxb. | Fl. Ind. 2: 88 | 1824 |
| Ipomoea salsettensis | Santapau & Patel | Trans. Bose Res. Inst. Calcutta 22: 34, t. 2, | 1958 |
| Ipomoea samanensis | Urb. | Repert. Spec. Nov. Regni Veg. 20: 343 | 1924 |
| Ipomoea sanguinea | Vahl | Symb. Bot. 3: 33 | 1794 |
| Ipomoea santacruzensis | O’Donell | Arq. Mus. Paranaense 9: 237, t. 14 | 1952 |
| Ipomoea santae-rosae | Standl. & Steyerm. | Publ. Field Mus. Nat. Hist., Bot. Ser. 23(2): 81 | 1944 |
| Ipomoea santillanii | O’Donell | Anales Inst. Biol. Univ. Nac. M閤ico 12(1): 93 | 1941 |
| Ipomoea saopaulista | O’Donell | Lilloa 26: 392 | 1953 |
| Ipomoea sarmentacea | Rendle | ||
| Ipomoea sawyeri | D.F. Austin | Brittonia 43(2): 93?5 | 1991 |
| Ipomoea saxicola | Proctor | J. Arnold Arbor. 63(3): 292 | 1982 |
| Ipomoea saxorum | Standl. & Steyerm. | Publ. Field Mus. Nat. Hist., Bot. Ser. 23(2): 81?2 | 1944 |
| Ipomoea scabra | Forssk. | Fl. Aegypt.-Arab. 44 | 1775 |
| Ipomoea schaffneri | S. Watson | Proc. Amer. Acad. Arts 18: 123 | 1883 |
| Ipomoea schiedeana | Zucc. | Flora 2: 801 | 1831 |
| Ipomoea schiedeana | Ham. | Edwards’s Bot. Reg. 24: Misc. 19?1 | 1838 |
| Ipomoea schomburgkii | Choisy | Prodr. 9: 354 | 1845 |
| Ipomoea schrenkiana | Peter | Nat. Pflanzenfam. IV(3a): 30 | 1897 or 1891 |
| Ipomoea schulziana | O’Donell | Lilloa 14: 186, t. 10 | 1948 |
| Ipomoea scopulorum | Brandegee | Zo?5(9B): 169 | 1903 |
| Ipomoea scrobiculata | (Lindl.) Sweet | Hort. Brit. (ed. 2) 372, no. 102 | 1830 |
| Ipomoea scrobiculata | (Lindl.) G. Don | Hort. Brit. (ed. 3) 484, no. 79 | 1839 |
| Ipomoea seaania | Felger & D.F. Austin | Sida 21(3): 1296?303, f. 1 | 2005 |
| Ipomoea sectifolia | Shinners | ||
| Ipomoea secunda | G. Don | Gen. Hist. 282 | 1837 |
| Ipomoea seducta | House | Ann. New York Acad. Sci. 18(6): 241 | 1908 |
| Ipomoea seleri | Millsp. | Bot. Jahrb. Syst. 36(80): 23 | 1905 |
| Ipomoea selleana | Urb. | Repert. Spec. Nov. Regni Veg. 24: 11 | 1927 |
| Ipomoea selloi | Meisn. | Fl. Bras. 7: 271 | 1869 |
| Ipomoea selloi var. rufescens | Meisn. | Fl. Bras. 7: 271 | 1869 |
| Ipomoea semisagitata | Griseb. ex Peter | Nat. Pflanzenfam. IV(3a): 31 | 1897 or 1891 |
| Ipomoea semisecta | Merxm. | ||
| Ipomoea senegalensi | Lam. | Tabl. Encycl. 1: 464 | 1791 |
| Ipomoea senegambiae | Choisy | ||
| Ipomoea sepacuitensis | Donn. Sm. | Bot. Gaz. 56(1): 59 | 1913 |
| Ipomoea sepiaria | Koenig ex Roxb. | Hort. Bengal. 14 | 1814 |
| Ipomoea sepiaria var. stipulacea | C.B. Clarke | Fl. Brit. India 4: 209 | 1883 |
| Ipomoea sericantha | Miq. | Stirp. Surinam. Select. 131 | 1850 or 1851 |
| Ipomoea sericantha | Griseb. | Fl. Brit. W. I. 471 | 1864 or 1862 |
| Ipomoea sericea | Spreng. ex Choisy | Prodr. 9: 368 | 1845 |
| Ipomoea sericea | (L.) Blume | Bijdr. Fl. Ned. Ind. 720?21 | 1825 or 1826 |
| Ipomoea sericophylla | Peter | Nat. Pflanzenfam. IV(3a): 31 | 1897 or 1891 |
| Ipomoea sericophylla | Meisn. | Fl. Bras. 7: 260 | 1869 |
| Ipomoea serotina | (DC.) Roem. & Schult. | Syst. Veg. (ed. 15 bis) 4: 215 | 1819 |
| Ipomoea serpens | Meisn. | Fl. Bras. 7: 275 | 1869 |
| Ipomoea serpens var. albiflora | Hallier f. | Bull. Herb. Boissier 7(App.1): 49 | 1899 |
| Ipomoea serpens fo. crassifolia | Chodat & Hassl. | Bull. Herb. Boissier, sér. 2, 5: 694 | 1905 |
| Ipomoea serpens var. subtomentosa | Chodat & Hassl. | Bull. Herb. Boissier, sér. 2, 5: 694 | 1905 |
| Ipomoea serpyllifolia | (Kunth) G. Don | Gen. Hist. 4: 267 | 1838 |
| Ipomoea serrata | Choisy | Conv. Rar. 135 | 1837 |
| Ipomoea serrulifera | Standl. & L.O. Williams | Ceiba 3(2): 128 | 1952 |
| Ipomoea sescossiana | Baill. | Bull. Mens. Soc. Linn. Paris 1: 385 | 1883 |
| Ipomoea sessiliflora | Roth | Nov. Pl. Sp. 116 | 1821 |
| Ipomoea sessilis | L.O. Williams | Fieldiana, Bot. 32(12): 195 | 1970 |
| Ipomoea setifera | Hutch. & Dalziel | Fl. W. Trop. Afr. 2: 216 | 1931 |
| Ipomoea setifera | Poir. | Encycl. 6: 17 | 1804 |
| Ipomoea setifera var. fimbriosepala | (Choisy) Fosberg | Smithsonian Contr. Bot. 36: 24 | 1977 |
| Ipomoea setifera var. orbicularis | Chodat & Hassl. | Bull. Herb. Boissier, sér. 2, 5: 687 | 1905 |
| Ipomoea setosa | Blume | Bijdr. Fl. Ned. Ind. 714 | 1825 |
| Ipomoea setosa | Ker Gawl. | Bot. Reg. 4: pl. 335 | 1818 |
| Ipomoea setosa var. campanulata | (Hallier f.) House | Ann. New York Acad. Sci. 18(6): 219 | 1908 |
| Ipomoea setosa var. pavonii | (Choisy) House | Ann. New York Acad. Sci. 18(6): 220 | 1908 |
| Ipomoea shinnersii | D.F. Austin | Ann. Missouri Bot. Gard. 64(2): 337 | 1977 or 1978 |
| Ipomoea shinnersii var. shinnersii | |||
| Ipomoea shinnersii var. woronovii | (Standl.) D.F. Austin | Ann. Missouri Bot. Gard. 64(2): 337 | 1977 or 1978 |
| Ipomoea shirambensis | Baker | Kew Bull. 1894: 72 | 1894 |
| Ipomoea shirensis | Oliv. | Icon. Pl. t. 1474 | |
| Ipomoea shumardi | Torr. | Explor. Red River Louisiana 191 | 1854 |
| Ipomoea shumardiana | (Torr.) Shinners | S. W. Naturalist 6(2): 101 | 1961 |
| Ipomoea shupangensis | Baker | Kew Bull. 1894: 73 | 1894 |
| Ipomoea sibirica | (L.) Pers. | Syn. Pl. 1: 183 | 1805 |
| Ipomoea sidaefolia | Choisy | Convolv. Orient. 77 | 1834 |
| Ipomoea sidaefolia | (Kunth) Choisy | Mém. Soc. Phys. Genève 6(2): 459?60 | 1834 |
| Ipomoea sidaefolia | (Kunth) Sweet | Hort. Brit. (ed. 2) 372 | 1830 |
| Ipomoea signata | House | Muhlenbergia 3(3): 46 | 1907 |
| Ipomoea siltepecana | Matuda | ||
| Ipomoea silvestris | Brandegee | Univ. Calif. Publ. Bot. 6(8): 190 | 1915 |
| Ipomoea silvicola | House | Bot. Gaz. 43(6): 411, f. 4 | 1907 |
| Ipomoea simonsiana | Rendle | J. Bot. 32: 178 | 1894 |
| Ipomoea simplex | Thunb. | Prodr. Pl. Cap. 36 | 1794 |
| Ipomoea simplex | auct. non Thunb. | ||
| Ipomoea simplex | Hook. | Bot. Mag. 72: , t. 4206 | 1846 |
| Ipomoea simplex var. obtusisepala | Rendle | ||
| Ipomoea simulans | D. Hanb. | J. Linn. Soc., Bot. 11: 281 | 1871 |
| Ipomoea sinaloensis | Brandegee | Zo?5: 217 | 1905 |
| Ipomoea sindica | Stapf | ||
| Ipomoea sinensis | (Desr.) Choisy | Mém. Soc. Phys. Genève 6: 459 | 1834 |
| Ipomoea sinensis subsp. blepharosepala | (Hochst. ex A. Rich.) Verdc. ex A. Meeuse | Bothalia 6: 729 | 1958 |
| Ipomoea sinensis subsp. sinensis | |||
| Ipomoea sinuata | Ortega | Nov. Pl. Descr. Dec. 7: 84 | 1798 |
| Ipomoea sinuata var. edentata | Meisn. | Fl. Bras. 7: 284?85 | 1869 |
| Ipomoea sinuata var. sinuata | |||
| Ipomoea skutchii | J.A. McDonald | Harvard Pap. Bot. 4: 53?6, f. 1 | 1993 |
| Ipomoea ?sloteri | (House) Ooststr. | Fl. Malesiana, Ser. 1, Spermatoph. 4(4): 483 | 1953 |
| Ipomoea smithii | Baker | Bull. Misc. Inform. Kew 1894: 73 | 1894 |
| Ipomoea solanifolia | L. | Sp. Pl. 1: 161 | 1753 |
| Ipomoea soluta | Kerr | Bull. Misc. Inform. Kew 1941(1): 18 | 1941 |
| Ipomoea soluta var. alba | C.Y. Wu | Rep. Stud. Pl. Trop. Subtrop. Yunnan 1: 122 | 1965 |
| Ipomoea soluta var. soluta | |||
| Ipomoea sororia | D.F. Austin & Tapia-Mu駉z | Sida 19(4): 807?10, f. 1 | 2001 |
| Ipomoea spathulata | Hallier f. | Annuario Reale Ist. Bot. Roma 7: 234 | 1898 |
| Ipomoea speciosa | (L. f.) Pers. | Syn. Pl. 1: 183 | 1805 |
| Ipomoea spectata | J.A. McDonald | Harvard Pap. Bot. 4: 49 | 1993 |
| Ipomoea sphaerocephala | (Roxb.) D. Don | Prodr. Fl. Nepal. 98 | 1825 |
| Ipomoea sphenophylla | Urb. | Symb. Antill. 5: 474 | 1908 |
| Ipomoea spicaeflora | Choisy | Mém. Soc. Phys. Genève 8(1): 54?5 | 1838 |
| Ipomoea spicata | Kunth | Nov. Gen. Sp. (quarto ed.) 3: 112 | 1819 |
| Ipomoea spinulosa | Brandegee | Zo?5: 169 | 1903 |
| Ipomoea spirale | House | Muhlenbergia 3: 40 | 1907 |
| Ipomoea spiralis | House | Muhlenbergia 3(3): 40 | 1907 |
| Ipomoea splendens | (Hornem.) Sims | Bot. Mag. 53: , pl. 2628 | 1826 |
| Ipomoea splendor-sylvae | House | Muhlenbergia 3(3): 43, t. 2 | 1907 |
| Ipomoea spruceana | Benth. ex Meisn. | Fl. Bras. 7: 224 | 1869 |
| Ipomoea squamisepala | O’Donell | Lilloa 23: 453, t. 13, f. 1 | 1950 |
| Ipomoea squamosa | Choisy | Prodr. 9: 376?77 | 1845 |
| Ipomoea squamosa var. petiolaris | Meisn. | Fl. Bras. 7: 269?70 | 1869 |
| Ipomoea squamosa var. villosa | Ooststr. | Recueil Trav. Bot. N閑rl. 30: 211 | 1933 |
| Ipomoea stachyoides | Meisn. | ||
| Ipomoea stans | Cav. | Icon. 3: 26, t. 250 | 1794 |
| Ipomoea stans var. hirsuta | B.L. Rob. | Proc. Amer. Acad. Arts 29: 319 | 1894 |
| Ipomoea stans var. stans | |||
| Ipomoea staphylina | Roem. & Schult. | Syst. Veg. (ed. 15 bis) 4: 249 | 1819 |
| Ipomoea staphylina var. malayana | Prain | ||
| Ipomoea steerei | (Standl.) L.O. Williams | Fieldiana, Bot. 32(12): 195, f. 2 | 1970 |
| Ipomoea stellaris | Baker | Kew Bull. 1894: 73 | 1894 |
| Ipomoea stenantha | Dunn | Bull. Misc. Inform., Addit. Ser. 10: 180 | 1912 |
| Ipomoea stenobasis | Brenan | Kew Bull. 5: 228 | 1950 |
| Ipomoea stenophylla | Meisn. | Fl. Bras. 7: 249 | 1869 |
| Ipomoea stenophylla fo. glabrata | Chodat & Hassl. | Bull. Herb. Boissier, sér. 2, 5: 690 | 1905 |
| Ipomoea stenophylla var. laciniata | Meisn. | Fl. Bras. 7: 249 | 1869 |
| Ipomoea stenosiphon | Hallier f. | Sitzungsber. Kaiserl. Akad. Wiss., Math.-Naturwiss. Cl., Abt. 1 107(1): 50 | 1898 |
| Ipomoea steudelii | Millsp. | Publ. Field Columb. Mus., Bot. Ser. 2(1): 86?7 | 1901 |
| Ipomoea stipulacea | Jacq. | Pl. Hort. Schoenbr. 2: 39, pl. 199 | 1797 |
| Ipomoea stocksii | Peter | Nat. Pflanzenfam. IV(3a): 31 | 1897 or 1891 |
| Ipomoea stocksii | C.B. Clarke | Fl. Brit. India 4: 204 | 1883 |
| Ipomoea stolonifera | (Cirillo) J.F. Gmel. | Syst. Veg. 1: 345 | 1796 |
| Ipomoea strigosa | Roth | Syst. Veg. 4: 242 | 1819 |
| Ipomoea stuckertii | O’Donell | Lilloa 14: 188, t. 11 | 1948 |
| Ipomoea stuhlmannii | Dammer | Pflanzenw. Ost-Afrikas C: 333 | 1895 |
| Ipomoea suaveolens | (M. Martens & Galeotti) Hemsl. | Biol. Cent.-Amer., Bot. 2(11): 394 | 1882 |
| Ipomoea subdentata | Miq. | Fl. Ned. Ind. 2: 614 | 1857 |
| Ipomoea suberceolata | O’Donell | Lilloa 26: 394 | 1953 |
| Ipomoea subincana | (Choisy) Meisn. | Fl. Bras. 7: 259 | 1869 |
| Ipomoea sublucens | Rendle | ||
| Ipomoea subrevoluta | Choisy | Prodr. 9: 386 | 1845 |
| Ipomoea subrevoluta fo. acutiloba | Hassl. | Repert. Spec. Nov. Regni Veg. 9: 159 | 1911 |
| Ipomoea subrevoluta var. genuina | Hassl. | Repert. Spec. Nov. Regni Veg. 9: 159 | 1911 |
| Ipomoea subsessilis | Courchet & Gagnep. | ||
| Ipomoea subspicata | (Meisn.) O’Donell | Lilloa 23: 501, t. 16 | 1950 |
| Ipomoea subtomentosa | (Chodat & Hassl.) O’Donell | Arq. Mus. Paranaense 9: 239 | 1952 |
| Ipomoea subtomentosa fo. albiflora | (Hallier f.) O’Donell | Arq. Mus. Paranaense 9: 241 | 1952 |
| Ipomoea subtomentosa fo. subtomentosa | |||
| Ipomoea subtriflora | Zoll. & Moritzi | Syst. Verz. 51 | 1845 |
| Ipomoea subtriloba | Ruiz & Pav. | Fl. Peruv. 2: 12 | 1799 |
| Ipomoea subtrilobans | Miq. | Fl. Ned. Ind. 2: 615 | |
| Ipomoea subulata | Hassl. | Repert. Spec. Nov. Regni Veg. 9: 157 | 1911 |
| Ipomoea suburceolata | O’Donell | Lilloa 26: 394 | 1953 |
| Ipomoea suffruticosa | Burch. | Trav. S. Africa 2: 226 | |
| Ipomoea suffulta | (Kunth) G. Don | Gen. Hist. 4: 276 | 1838 |
| Ipomoea sulphurea | (La Llave & Lex.) G. Don | Gen. Hist. 4: 268 | 1838 |
| Ipomoea sulphurea | Hochst. ex Choisy | Prodr. 9: 356 | 1845 |
| Ipomoea sulphurea fo. deltoidea | Roberty | Bull. Inst. Fran? Afrique Noire 16: 1060 | 1954 |
| Ipomoea sultanii | Chiov. | Fl. Somala 1: 234 | 1929 |
| Ipomoea sumatrana | (Miq.) Ooststr. | Blumea 3(3): 571 | 1940 |
| Ipomoea superba | (Kunth) G. Don | Gen. Hist. 4: 275 | 1838 |
| Ipomoea superba | Ledeb. | Index Sem. (Dorpat) 11 | 1822 |
| Ipomoea sylvestris | Brandegee | Univ. Calif. Publ. Bot. 6(8): 190 | 1915 |
| Ipomoea syringaefolia | Baker | J. Linn. Soc., Bot. 22: 507?08 | 1886 or 1887 |
| Ipomoea syringifolia | Meisn. | Fl. Bras. 7: 270 | 1869 |
| Ipomoea tabascana | J.A. McDonald & D.F. Austin | Brittonia 42(2): 116, f. 1 | 1990 |
| Ipomoea tacambarensis | E. Carranza | Sida 20(4): 1351?356, f. 1? | 2003 |
| Ipomoea tacuaremboensis | Arechav. | Anales Mus. Nac. Montevideo 7: 195, t. 46 | 1911 |
| Ipomoea tamnifolia | L. | Sp. Pl. 1: 162 | 1753 |
| Ipomoea tarijensis | O’Donell | Lilloa 30: 53 | 1960 |
| Ipomoea tashiroi | Matsum. | Bot. Mag. (Tokyo) 12(140): 75?6 | 1898 |
| Ipomoea tastensis | Brandegee | Zo?5(9B): 168 | 1903 |
| Ipomoea tehuantepecensis | L. Torres, R. Torres, M.P. Ram韗ez & J.A. McDonald | J. Bot. Res. Inst. Texas 2(2): 793?96, f. 1? | 2008 |
| Ipomoea temascaltepecensis | Wilkin | Kew Bull. 50(1): 95 | 1995 |
| Ipomoea tenera | Meisn. | Fl. Bras. 7: 289 | 1869 |
| Ipomoea tentaculifera | Greenm. | Proc. Amer. Acad. Arts 33(25): 482 | 1898 |
| Ipomoea tenuifolia | (Vahl) Urb. | Symb. Antill. 5: 472 | 1908 |
| Ipomoea tenuiloba | Torr. | Rep. U.S. Mex. Bound. 2(1): 148?49 | 1859 |
| Ipomoea tenuiloba var. lemmonii | (A. Gray) Yatsk. & C.T. Mason | Madro駉 31(2): 106 | 1984 |
| Ipomoea tenuiloba var. tenuiloba | |||
| Ipomoea tenuipes | Verdc. | Kew Bull. 15: 12 | 1961 |
| Ipomoea tenuirostris | Choisy | Prodr. 9: 379 | 1845 |
| Ipomoea tenuirostris subsp. hindeana | Verdc. | Kew Bull. 13: 203 | 1958 |
| Ipomoea tenuirostris subsp. repens | Verdc. | Kew Bull. 13: 203 | 1958 |
| Ipomoea tenuirostris subsp. tenuirostris | |||
| Ipomoea tenuis | E. Mey. | Flora 195 | 1843 |
| Ipomoea tenuissima | Choisy | Prodr. 9: 376 | 1845 |
| Ipomoea teotitlanica | McPherson | Contr. Univ. Michigan Herb. 14: 85 | 1980 |
| Ipomoea terminalis | Choisy | Mém. Soc. Phys. Genève 8(1): 54 | 1838 |
| Ipomoea ternata | Jacq. | Pl. Hort. Schoenbr. 1: 16, t. 37 | 1797 |
| Ipomoea ternifolia | Cav. | Icon. 5: 52, pl. 478, f. 1 | 1799 |
| Ipomoea ternifolia var. leptotoma | (Torr.) J.A. McDonald | Harvard Pap. Bot. 1(6): 120 | 1995 |
| Ipomoea ternifolia var. ternifolia | |||
| Ipomoea ternifolia var. valida | (House) J.A. McDonald | Harvard Pap. Bot. 6: 122 | 1995 |
| Ipomoea ternifolia var. villosa | (Choisy) Staples & Govaerts | Phytologia 97(3): 221 | 2015 |
| Ipomoea teruae | Ant. Molina & L.O. Williams | Fieldiana, Bot. 32(12): 196 | 1970 |
| Ipomoea tessmannii | Pilg. | Notizbl. Bot. Gart. Berlin朌ahlem 7: 542 | 1921 |
| Ipomoea tetraptera | Baker | Fl. Cap. 4(2): 65 | 1904 |
| Ipomoea texana | J.M. Coult. | Contr. U.S. Natl. Herb. 1(2): 45 | 1890 |
| Ipomoea theodori | O’Donell | Lilloa 14: 191, t. 12 | 1948 |
| Ipomoea thomsoniana | Mast. | Gard. Chron. 2: 818 | 1883 |
| Ipomoea thurberi | A. Gray | Syn. Fl. N. Amer. 2(1): 212 | 1878 |
| Ipomoea ticcopa | Verdc. | Kew Bull. 13: 213 | 1958 |
| Ipomoea tiliacea | (Willd.) Choisy | Prodr. 9: 375 | 1845 |
| Ipomoea tiliifolia | (Desr.) Roem. & Schult. | Syst. Veg. (ed. 15 bis) 4: 229 | 1819 |
| Ipomoea timorensis | Blume | Bijdr. Fl. Ned. Ind. 711 | 1825 |
| Ipomoea tomentosa | Yamam. | Icon. Pl. Formosan., Suppl. 1: 42?3, f. 20 | 1925 |
| Ipomoea tomentosa | Choisy | Mém. Soc. Phys. Genève 8(1): 55 | 1838 |
| Ipomoea tonkinensis | Gagnep. | ||
| Ipomoea tortugensis | Peter | Nat. Pflanzenfam. IV(3a): 31 | 1897 or 1891 |
| Ipomoea transvaalensis | A. Meeuse | Bothalia 6: 748 | 1958 |
| Ipomoea transvaalensis subsp. orientalis | Verdc. | Webbia 13: 324 | 1958 |
| Ipomoea trematosperma | Hochst. ex Choisy | Prodr. 9: 367 | 1845 |
| Ipomoea trichocalyx | Schum. & Thonn. | Beskr. Guin. Pl. 91 | 1827 |
| Ipomoea trichocalyx | Steud. | Nomencl. Bot. (ed. 2) 2(1): 819 | 1840 |
| Ipomoea trichocarpa | Elliott | Sketch Bot. S. Carolina 1: 258 | 1821 or 1817 |
| Ipomoea trichocarpa var. australis | O’Donell | Bol. Soc. Argent. Bot. 4: 260 | 1953 |
| Ipomoea trichocarpa var. torreyana | (A. Gray) Shinners | Field & Lab. 21(4): 164 | 1953 |
| Ipomoea trichocarpa var. trichocarpa | |||
| Ipomoea trichosperma | Blume | Bijdr. 13: 710 | 1826 |
| Ipomoea tricolor | Cav. | Icon. 3(1): 5, pl. 208 | 1794 or 1795 |
| Ipomoea tridentata | (L.) Roth | Arch. Bot. (Leipzig) 1(2): 38 | 1798 |
| Ipomoea trifida | (Kunth) G. Don | Gen. Hist. 4: 280 | 1838 |
| Ipomoea trifida var. berlandieri | A. Gray | Syn. Fl. N. Amer. 2(1): 212 | 1878 |
| Ipomoea trifida var. torreyana | A. Gray | Syn. Fl. N. Amer. 2(1): 212 | 1878 |
| Ipomoea trifida var. trifida | |||
| Ipomoea trifida var. ymalensis | House | Ann. New York Acad. Sci. 18(6): 254 | 1908 |
| Ipomoea triflora | Forssk. | Fl. Aegypt.-Arab. 44 | 1775 |
| Ipomoea triloba | L. | Sp. Pl. 1: 161 | 1753 |
| Ipomoea triloba var. quinquefolia | Kuntze | Revis. Gen. Pl. 2: 466 | 1891 |
| Ipomoea trinervia | Schulze-Menz | Notizbl. Bot. Gart. Berlin朌ahlem 14: 109 | 1938 |
| Ipomoea trinitensis | Urb. | Symb. Antill. 3(2): 346 | 1902 |
| Ipomoea triquetra | (Vahl) Roem. & Schult. | Syst. Veg. (ed. 15 bis) 4: 231 | 1819 |
| Ipomoea tropica | Santapau & Patel | J. Bombay Nat. Hist. Soc. 54: 709 | 1957 |
| Ipomoea truncata | Roezl in Deut. | Gartn.-Zeit. 33: 135 | 1883 |
| Ipomoea tuba | (Schltdl.) G. Don | Gen. Hist. 4: 271 | 1838 or 1837 |
| Ipomoea tubata | Nees | Flora 4: 301 | 1821 |
| Ipomoea tuberculata | Ker Gawl. | Bot. Reg. 1, t. 86 | 1816 |
| Ipomoea tuberculata | (Desr.) Roem. & Schult. | Syst. Veg. (ed. 15 bis) 4: 208 | 1819 |
| Ipomoea tuberculata var. abbreviata | Choisy | Prodr. 9: 387 | 1845 or 1845 |
| Ipomoea tuberculata var. odontosepala | Verdc. | Kew Bull. 14: 341 | 1960 |
| Ipomoea tuberosa | L. | Sp. Pl. 1: 160 | 1753 |
| Ipomoea tubiflora | Hook. f. | Trans. Linn. Soc. London 20: 204 | 1847 |
| Ipomoea tuboides | O. Deg. & Ooststr. | Fl. Hawaii. 307 | 1940 |
| Ipomoea tuboides var. pubescens | Lag. | ||
| Ipomoea tubulosa | (M. Martens & Galeotti) Hemsl. | Biol. Cent.-Amer., Bot. 2(11): 395 | 1882 |
| Ipomoea tubulosa | Roem. & Schult. | Syst. Veg. (ed. 15 bis) 4: 789 | 1819 |
| Ipomoea tuerckheimii | Vatke ex Donn. Sm. | Bot. Gaz. 40(1): 8 | 1905 |
| Ipomoea turbinata | Lag. | Gen. Sp. Pl. 10 | 1816 |
| Ipomoea turneroides | Chodat & Hassl. | Bull. Herb. Boissier, sér. 2, 5: 688 | 1905 |
| Ipomoea turpethum | (L.) R. Br. | Prodr. 485 | 1810 |
| Ipomoea turpethum var. anceps | (L.) Miq. | ||
| Ipomoea tuxtlensis | House | Ann. New York Acad. Sci. 18(6): 256 | 1908 |
| Ipomoea tweediei | Hook. | Bot. Mag. 69: , t. 3978 | 1842 |
| Ipomoea tyrianthina | Lindl. | Edwards’s Bot. Reg. 24: Misc. 87 | 1838 |
| Ipomoea uhdeana | (Fenzl ex Hallier f.) D.F. Austin | Ann. Missouri Bot. Gard. 64(2): 332 | 1977 or 1978 |
| Ipomoea umbellata | (L.) G. Mey. | Prim. Fl. Esseq. 99 | 1818 |
| Ipomoea umbellata | L. | Syst. Nat. (ed. 10) 2: 924 | 1759 |
| Ipomoea umbraticola | House | Ann. New York Acad. Sci. 18(6): 259 | 1908 |
| Ipomoea uncinata | Hutch. | ||
| Ipomoea undulata | Baker ex Baker & Wright | ||
| Ipomoea uniflora | (Burm.) Roem. & Schult. | Syst. Veg. (ed. 15 bis) 4: 247 | 1819 |
| Ipomoea urbaniana | (Dammer) Hallier f. | Sitzungsber. Kaiserl. Akad. Wiss., Math.-Naturwiss. Cl., Abt. 1 107: 52 | 1898 |
| Ipomoea urbica | Choisy | Prodr. 9: 349 | 1845 |
| Ipomoea urbica var. muricata | Choisy | Prodr. 9: 350 | 1845 |
| Ipomoea urbinei | House | Muhlenbergia 3(3): 41, t. 2, f. b | 1907 |
| Ipomoea urceolata | R. Br. | Prodr. 485 | 1810 |
| Ipomoea ursina | Brandegee | Univ. Calif. Publ. Bot. 4(19): 382 | 1913 |
| Ipomoea uruguayensis | Meisn. | Fl. Bras. 7: 272 | 1869 |
| Ipomoea uruguayensis var. elliptica | Chodat & Hassl. | Bull. Herb. Boissier, sér. 2, 5: 693 | 1905 |
| Ipomoea uruguayensis var. glabrata | Chodat & Hassl. | Bull. Herb. Boissier, sér. 2, 5: 693 | 1905 |
| Ipomoea uruguayensis fo. retusa | Chodat & Hassl. | Bull. Herb. Boissier, sér. 2, 5: 693 | 1905 |
| Ipomoea utilis | Choisy | Prodr. 9: 375 | 1845 |
| Ipomoea vagans | Baker | Bull. Misc. Inform. Kew 1894: 70 | 1894 |
| Ipomoea vahliana | House | Ann. New York Acad. Sci. 18(6): 204 | 1908 |
| Ipomoea valenzulensis | Chodat & Hassl. | Bull. Herb. Boissier, sér. 2, 5: 687 | 1905 |
| Ipomoea valerii | Standl. & L.O. Williams | Ceiba 3(1): 55 | 1952 |
| Ipomoea valida | House | Muhlenbergia 3(3): 40, t. 1, f. d | 1907 |
| Ipomoea vaniotiana | Léveillé, Augustin(e) Abel Hector | Repert. Spec. Nov. Regni Veg. 9(222-226): 453 | 1911 |
| Ipomoea vargasiana | O’Donell | Bol. Soc. Peruana Bot. 1: 5 | 1948 |
| Ipomoea variabilis | (Schltdl. & Cham.) Choisy | Prodr. 9: 383 | 1845 |
| Ipomoea variifolia | Meisn. | Fl. Bras. 7: 275 | 1869 |
| Ipomoea velardei | O’Donell | Bol. Soc. Peruana Bot. 1: 6 | 1948 |
| Ipomoea velardei var. aequatoriana | O’Donell | Lilloa 26: 395, t. 17 | 1953 |
| Ipomoea velloziana | Mart. | Flora 21(Beibl. 2): 64 | 1838 |
| Ipomoea velutipes | Welw. ex Rendle | J. Bot. 32: 175 | 1894 |
| Ipomoea venicifolia | Arn. | Madras J. Lit. Sci. 5: 19 | 1837 |
| Ipomoea venosa | (Desr.) Roem. & Schult. | Syst. Veg. (ed. 15 bis) 4: 212 | 1819 |
| Ipomoea venosa subsp. stellaris | (Baker) Verdc. | Kirkia 6: 120 | 1967 |
| Ipomoea venosa subsp. venosa | |||
| Ipomoea ventricosa | (Bertero) G. Don | Gen. Hist. 4: 274 | 1838 |
| Ipomoea venustum | (M. Martens & Galeotti) Hemsl. | Biol. Cent.-Amer., Bot. 2(11): 395 | 1882 |
| Ipomoea verbasciformis | (Meisn.) O’Donell | Lilloa 23: 502 | 1950 |
| Ipomoea verbascoidea | Choisy | Prodr. 9: 356 | 1845 |
| Ipomoea verbascoidea | Choisy | Mém. Soc. Phys. Genève 8: 56 | 1838 |
| Ipomoea verecunda | N.E. Br. | ||
| Ipomoea verrucisepala | Verdc. | Kirkia 6: 118 | 1967 |
| Ipomoea verrucosa | Blume | Bijdr. Fl. Ned. Ind. 13: 718 | 1825 |
| Ipomoea verruculosa | (Pittier) O’Donell | Lilloa 26: 397 | 1953 |
| Ipomoea verruculosa | Mart. ex Choisy | Prodr. 9: 378 | 1845 |
| Ipomoea versicolor | Meisn. | Fl. Bras. 7: 220 | 1869 |
| Ipomoea verticillata | Forssk. | Fl. Aegypt.-Arab. 44 | 1775 |
| Ipomoea verticillata | L. | Syst. Nat. (ed. 10) 2: 924 | 1759 |
| Ipomoea vesiculosa | P. Beauv. | Fl. Oware 2: 73, t. 106 | 1819 |
| Ipomoea vestalii | Standl. | Contr. Arnold Arbor. 5: 130, f. 17 | 1933 |
| Ipomoea vestallii | Standl. | Contr. Arnold Arbor. 5: 130, t. 17 | 1933 |
| Ipomoea villicalyx | N.E. Br. | Trans. Bot. Soc. Edinburgh 20: 64 | 1894 |
| Ipomoea villifera | House | Muhlenbergia 5(5): 70?1 | 1909 |
| Ipomoea villosa | (Choisy) Meisn. | Fl. Bras. 7: 244 | 1869 |
| Ipomoea villosa | Ruiz & Pav. | Fl. Peruv. 2: 13, t. 121 | 1799 |
| Ipomoea villosa var. argentea | (Meisn.) Hallier | Jahrb. Hamburg. Wiss. Anst. 16: 63 | 1899 |
| Ipomoea villosa var. discolor | Hassl. | ||
| Ipomoea villosa var. hypoleuca | Hallier f. | Jahrb. Hamburg. Wiss. Anst. Beih. 16(3): 53 | 1899 or 1899 |
| Ipomoea violacea | L. | Sp. Pl. 1: 161 | 1753 |
| Ipomoea virgata | Meisn. | Fl. Bras. 7: 241 | 1869 |
| Ipomoea virgata var. subspicata | Meisn. | Fl. Bras. 7: 241, t. 83, f. 1 | 1869 |
| Ipomoea virgata var. verbasciformis | Meisn. | ||
| Ipomoea viridiflora | Urb. | Symb. Antill. 3: 348 | 1902 |
| Ipomoea viridis | Choisy | J. Linn. Soc., Bot. 12: 507 | 1887 |
| Ipomoea viscosa | Wiggins | Contr. Dudley Herb. 4: 21 | 1950 |
| Ipomoea vitifolia | (Burm. f.) Blume | Bijdr. Fl. Ned. Ind. 13: 709 | 1825 |
| Ipomoea vitifolia var. angularis | (Burm. f.) Choisy | ||
| Ipomoea vivianae | Krapov. | Bonplandia (Corrientes) 18(1): 57?9, f. 1 | 2009 |
| Ipomoea volcanensis | O’Donell | Lilloa 26: 398, t. 18 | 1953 |
| Ipomoea vulsa | House | Muhlenbergia 3(3): 45, t. 1, f. a朾 | 1907 |
| Ipomoea wallichii | (Choisy) Steud. | Nomencl. Bot. 1: 820 | 1841 |
| Ipomoea wallii | (C. Morren) Hemsl. | Biol. Cent.-Amer., Bot. 2(11): 396 | 1882 |
| Ipomoea walpersiana | Urb. | Symb. Antill. 3: 345 | 1902 |
| Ipomoea wangii | C.Y. Wu | Fl. Rep. Trop. Subtrop. Yunnan 1: 118, pl. 35, 2 | 1965 |
| Ipomoea warmingii | Meisn. | Fl. Bras. 7: 272 | 1869 |
| Ipomoea wattii | C.B. Clarke | J. Linn. Soc., Bot. 25: 49 | 1889 |
| Ipomoea welwitschii | Vatke ex Hallier f. | Bot. Jahrb. Syst. 18: 146 | 1893 |
| Ipomoea wightii | (Wall.) Choisy | Mém. Soc. Phys. Genève 6: 470 | 1834 |
| Ipomoea wightii var. kilimandschari | (Dammer) Verdc. | Kew Bull. 13: 207 | 1958 |
| Ipomoea wightii var. obtusisepala | Verdc. | Kew Bull. 14: 341 | 1960 |
| Ipomoea wightii var. wightii | |||
| Ipomoea willdenowii | Roem. & Schult. | Syst. Veg. (ed. 15 bis) 4: 211 | 1819 |
| Ipomoea wilsonii | Gagnep. | Notul. Syst. (Paris) 3: 150?51 | 1915 |
| Ipomoea wilsonii | House | Muhlenbergia 3(3): 42, pl. 1, f. c | 1907 |
| Ipomoea wolcottiana | Rose | Gard. & Forest 7(342): 367, f. 59 | 1894 |
| Ipomoea wolcottiana subsp. calodendron | (O’Donell) McPherson | Ann. Missouri Bot. Gard. 68(4): 544 | 1981 |
| Ipomoea wolcottiana subsp. wolcottiana | |||
| Ipomoea wolcottiana var. wolcottiana | |||
| Ipomoea woodii | N.E. Br. | ||
| Ipomoea woronovii | (Standl.) D.F. Austin | Taxon 32(4): 626 | 1983 |
| Ipomoea woronovii var. lutea | (House) D.F. Austin | Taxon 32(4): 626 | 1983 |
| Ipomoea woronovii var. woronovii | |||
| Ipomoea wrightii | A. Gray | Syn. Fl. N. Amer. 2(1): 213 | 1878 |
| Ipomoea wrightii | (House) Alain | Mem. Soc. Cub. Hist. Nat. Felipe Poey" 22: 123" | 1955 |
| Ipomoea xanthantha | Kurz | For. Fl. Bombay 2: 219 | 1877 |
| Ipomoea xiphosepala | Baker | ||
| Ipomoea yamuriensis | Urb. | Symb. Antill. 9: 24 | 1924 |
| Ipomoea yaracuyensis | J.R. Grande & W. Meier | Brittonia 63: 365?69, f. 1A朇, f. 2A朆 | 2011 |
| Ipomoea yardiensis | A.S. George & Tate | J. Roy. Soc. Western Australia 50: 101 | 1967 or 1967 |
| Ipomoea yomae | Kurz | Forest Fl. Burma 2: 218 | 1877 |
| Ipomoea yunnanensis | Courchet & Gagnep. | Notul. Syst. (Paris) 3: 151?52 | 1915 |
| Ipomoea yunnanensis var. glabrescens | C.Y. Wu | Fl. Rep. Trop. Subtrop. Yunnan 1: 119,, pl. 35, 4 | 1965 |
| Ipomoea yunnanensis var. pallescens | C.Y. Wu | Fl. Rep. Trop. Subtrop. Yunnan 1: 120, pl. 36, 1 | 1965 |
| Ipomoea yunnanensis var. uniflora | C.Y. Wu | Fl. Rep. Trop. Subtrop. Yunnan 1: 120, pl. 36, 2 | 1965 |
| Ipomoea zambesiaca | Baker | ||
| Ipomoea zanzibarica | Verdc. | Kew Bull. 15: 17 | 1961 |
| Ipomoea zelayana | Standl. & L.O. Williams | ||
| Ipomoea zeylanica | Gaertn. | Fruct. Sem. Pl. 2: 482 | 1791 |
| Ipomoea zimmermanii | J.A. McDonald | Brittonia 39(1): 108, f. 2, A & B | 1987 |
New names in “Ipomoea (Convolvulaceae) in Bolivia” by J.R.I.Wood & Scotland.
Ipomoea graniticola
Key: Sepals obtuse, 7 – 8 mm long; leaflets narrowly oblong-elliptic
Ipomoea graniticola J. R. I. Wood & R. W. Scotland, sp. nov. Type: Bolivia, Santa Cruz, Ñuflo de Chávez, El Cerrito, J. R. I. Wood, D. Villarroel & S. Renvoize 25750 (holotype USZ; isotypes K, LPB, UB).
Twining perennial to 2 m, completely glabrous in all vegetative parts; stems slender. Leaves petiolate, divided into 5 separate leaflets, base ± truncate, leaflets 1.2 – 3 × 0.2 – 0.6 cm, attenuate at both ends, apex acute, the basal pair narrowly oblong, the remaining three narrowly oblongelliptic; petiole 1.2 – 1.5 cm, commonly straight. Inflorescence of 1 – 2-flowered, axillary, pedunculate cymes, peduncles slender, 2.5 – 5 cm, secondary peduncles c. 1.5 cm; bracteoles 1.5 × 0.5 mm, strap-shaped, obtuse, early caducous; pedicels 1.1 – 2 mm; sepals equal, 7 – 8 × 3.5 mm, broadly oblong, rounded, margins broad, scarious; corolla 6 – 7 cm, pink, glabrous, funnel-shaped, limb 5 – 6 cm, unlobed, stamens included, filaments glabrous except glandular base, shorter 7 – 8 mm long, longer very unequal, 12 – 18 mm, anthers linear, 5 – 6 × 1 mm, anthers 5 × 0.75 mm; ovary glabrous; style 3 cm, glabrous; stigma obscurely bilobed. Capsule 8 × 6 mm, obovoid, conspicuously 5-lobed, glabrous; seeds 4.5 × 3 mm, ±ovoid, pale brown, with deciduous white marginal hairs c. 3 mm in length.
Ipomoea mendozae
Key: Leaves with petioles 0.5 – 2 cm long; decumbent plant of Vallegrande
Key: Leaves elliptic-rhomboid, cuneate to truncate at base
Ipomoea mendozae J. R. I. Wood & R. W. Scotland, sp. nov. Type: Bolivia, Santa Cruz, Prov. Vallegrande, Guadelupe, 350 m de la represa sobre senda a La Estancia Collana, M. Mendoza & E. Calzadilla 416 (holotype USZ; isotype K).
Perennial herb, stems decumbent or ascending, 0.5 – 1.5 m long, relatively stout and slightly woody, densely white-tomentose. Leaves petiolate, 5 – 11.5 × 2.5 – 7 cm, ovate to subrhomboid, acute and shortly mucronulate, base truncate to broadly cuneate, adaxially grey-green, densely pubescent with long hairs, abaxially greytomentose; petioles 0.5 – 2 cm, tomentose. Inflorescence subterminal formed of pedunculate 1 – 3 (– 5)-flowered cymes from the upper leaf axils; bracts similar to the leaves but smaller, diminishing in size upwards, peduncles 6 – 12 cm, white-tomentose; secondary peduncles 1 – 1.5 cm, bracteoles 5 – 8 mm, linear to filiform; pedicels 5 – 12 mm, tomentose; sepals subequal, 8 – 10 × 3 – 4 mm, ovate-elliptic, obtuse, outer densely tomentose, the inner similar but with scarious, glabrous margins; corolla 5.5 – 8 cm long, pink, funnel-shaped, in bud tomentose on exterior, at maturity somewhat glabrescent but with pubescent midpetaline bands, limb 5.5 – 6 cm wide, shallowly lobed; stamens included, filaments slightly unequal, glabrous apart from the hirsute expanded basal part, the hairs short, spreading, fleshy, shorter filaments c. 20 mm, longer c. 25mm, anthers 4 × 0.5mm; style c. 25mm long, glabrous, stigma obscurely lobed, ovary glabrous. Capsule and seeds not seen.
Ipomoea cerradoensis
Key: Leaves ovate to elliptic; corolla white; inflorescence axillary
Ipomoea cerradoensis J. R. I. Wood & R. W. Scotland, sp. nov. Type: Bolivia, Santa Cruz, Prov. Velasco, Parque Nacional Noel Kempff Mercado, la meseta, camino al Camp. Huanchaca 2, J. R. I. Wood, D. Villarroel & M. Mendoza 27017 (holotype K, isotypes USZ, LPB).
Erect or ascending herb to 50 cm, rootstock a woody xylopodium, stem adpressed pubescent. Leaves shortly petiolate, 3 – 6 × 1 – 3.5 cm, ovate to elliptic, base broadly cuneate to rounded, apex obtuse to rounded, minutely mucronate, margin entire, both surfaces densely pubescent with slightly asperous hairs, abaxially paler with prominent dull red veins; petiole 2 – 5 mm, pubescent. Inflorescence of shortly pedunculate axillary cymes, commonly reduced to 1 – 2 flowers; peduncles 1 – 15 mm, pubescent; bracteoles 2 – 3 × 1 mm, oblong-lanceolate, caducous; pedicels 2 – 4 mm, pubescent; sepals subequal, outer 6 – 7 × 4 – 5 mm, ovate, acute to obtuse, mucronulate, pubescent, inner 6 × 4 – 5 mm, ovatesuborbicular, obtuse, mucronulate, pubescent, margin narrow, scarious; corolla pubescent in bud, somewhat glabrescent, white (rarely very pale pink), 5 – 6 cm long, funnel-shaped, limb c. 3 cm wide, indistinctly lobed; stamens included, filaments unequal, glabrous apart from the pubescent basal expanded part, shorter filaments 8 – 9 mm, longer 12 – 14 mm; anthers linear, 3.5 × 0.5 mm; style 2.3 cm, glabrous, stigma obscurely bilobed, ovary glabrous. Capsule and seeds not seen.
Ipomoea exserta
Key: Corolla hypocrateriform; stamens exserted
Ipomoea exserta J. R. I. Wood&R.W. Scotland, sp. nov. Type: Bolivia, Chuquisaca, Prov. Luis Calvo, 14 km E of Monteagudo, on pass before descent to Timboy Pampa, J. R. I. Wood 9693 (holotype HSB; isotypes K, LPB).
Liana to 6 m, the stems sometimes pendulous from overhanging branches, stems woody below, somewhat wiry above, thinly pilose, glabrescent when old, sometimes leafless when flowering. Leaves petiolate, 6 – 14 × 5 – 10 cm, mostly ovate, sometimes suborbicular, occasionally shallowly 3-lobed or with a single lateral tooth, base cordate to subtruncate with rounded auricles, apex acute, margin entire to obscurely undulate, adaxially dark green, appressed pubescent with long hairs, abaxially grey-mattedtomentose with some stellate hairs mixed with unbranched hairs; petioles relatively short, 3 – 4 cm, pilose. Inflorescence of compact many-flowered, axillary cymes, often subracemose in form; peduncle 5 – 11 cm, commonly twisted, shortly pilose; bracteoles oblong, caducous; secondary peduncles 6 – 10 mm, glabrous; pedicels 2 – 10 mm, glabrous; sepals subequal, 9 – 11 × 4 – 6 mm obovate-elliptic, coriaceous, concave, glabrous, margins narrow, scarious; outer sepals minutely mucronate; inner sepals slightly wider than the outer, rounded; corolla completely glabrous, 5 – 5.8 cm, hypocrateriform, the basal subcylindrical tube 3.5 – 3.8 × 0.5 – 0.9 cm, brownish, the limb 1.5 – 2 cm long, spreading, lobed, dark pink; stamens exserted 5 – 8 mm, filaments subequal, c. 30 mm, glabrous apart from the pubescent basal part; anthers oblong, 6 × 2 mm; style glabrous, c. 35 mm long, shortly exserted, stigma subglobose. ovary conical. Capsule and seeds not seen.
Ipomoea chiquitensis
Key: Ovary and capsule glabrous; sepals 5 – 6.5 mm long
Ipomoea chiquitensis J. R. I. Wood & R. W. Scotland, sp. nov. Type: Bolivia, Santa Cruz, Velasco, 6 – 10 km N de San Rafael en el camino a San Miguel, J. R. I. Wood & D. Soto 27388 (holotype USZ; isotypes K, LPB).
Very slender, possibly annual, twining herb reaching no more than 1 m in height, stems glabrous. Leaves petiolate, 2.5 – 5.5 × 1.5 – 4.5 cm, ovate, cordate with rounded auricles, becoming truncate upwards, apex acute and minutely mucronate, margin entire, adaxially thinly pilose, abaxially glabrous; petioles, 0.5 – 3 cm long, diminishing in length upwards, pubescent. Inflorescence of very shortly pedunculate 1 – 2-flowered cymes from the leaf axils; peduncles 3 – 7 mm, elongating in fruit to 20 mm, glabrous; bracteoles filiform, 1 mm; pedicels 3 – 7 mm, pubescent; sepals subequal, 5 – 6 × 2.5 mm (accrescent to 6.5 mm), ovate, acute terminating in an aristate point, pilose with scattered long multicellular hairs, margins slightly paler, inner sepals slightly shorter and paler, nearly glabrous; corolla 2.2 cm long, uniformly pink, glabrous, funnel-shaped, midpetaline bands ending in a small white tooth; stamens included, filaments slightly unequal, glabrous apart from expanded pubescent basal part, shorter filaments 5 – 6 mm, longer 7 – 8 mm, anthers linear, 1.25 × 0.25 mm; style 11 mm, glabrous, stigma obscurely 2-lobed. Capsule 6 × 3 mm, ovoid, glabrous, rostrate, the style base persistent as a pyramidal point 1.5 mm long.
Ipomoea mucronifolia
Key: Sepals appressed-pilose; leaf lobes rounded and long-mucronate
Ipomoea mucronifolia J. R. I. Wood & R. W. Scotland, sp. nov. Type: Bolivia, Santa Cruz, Prov. Chiquitos, entre Limoncito y Roboré, J. R. I. Wood & P. Pozo 25064 (holotype USZ, isotypes K, LPB).
Trailing perennial; stem densely villous, glabrescent when old. Leaves petiolate, mostly 4 – 8 × 4 – 8 cm, shallowly cordate with the base broadly cuneate, auricles rounded, 3 (–5)-lobed, the 4th and 5th lobes often poorly developed, lobes broadly ovate, elliptic or obovate, often overlapping, acute or obtuse and strongly mucronate wth mucro 2 – 3 mm long, densely grey appressed-pilose on both surfaces but abaxially paler; petioles 2.5 – 7 cm, softly pilose. Inflorescence of pedunculate, (2 –) 3-flowered, axillary cymes; peduncles 5.5 – 14 cm, pilose; bracteoles 3 – 7 × 1 mm, lanceolate, scarious, pilose, somewhat persistent; secondary peduncles 0.6 – 1.8 cm; pedicels 0.6 – 1.2 cm, pilose; sepals minutely gland-dotted on the exterior, dissimilar, outer 12 – 14 × 4 mm, broadly lanceolate, shortly acuminate, adpressed-pilose; inner 13 – 14 × 5 mm, oblong-obovate, rounded to acute, the central region pubescent, marginal part broad, glabrous, margin sparsely ciliate; corolla 5.5 – 6 cm long, pink, funnelshaped, the limb c. 5 cm diam., distinctly lobed with ovate acute lobes, densely pilose in bud but somewhat glabrescent, themidpetaline bands thinly pilose on open corollas; stamens included, filaments unequal, glabrous except for pubescent basal expanded part, shorter filaments 10 mm, longer 16 mm, anthers 5.5 × 1 mm, linear; style 19 mm, glabrous, stigma distinctly bilobed, ovary glabrous. Capsule and seeds not seen.
Ipomoea amazonica
Key: Bracteoles oblong-ovate, 5 – 13 mm wide, dull green without prominent veins
Ipomoea amazonica (D. F. Austin & Staples) J. R. I. Wood & R. W. Scotland, comb. nov.
Turbina amazonica D. F. Austin & Staples, Bull. Torrey Bot. Club 118 (3): 270 (1991). Type: Brazil, Amapá, D. F. Austin, C. E. Nauman, B. Rabelo, C. Rosário & M. R. Santos 7389 (holotype MG; isotypes FAU, now in FTG!, NY!, US!).
Twining perennial, stemtomentose. Leaves petiolate, 3.5 – 9 × 3 – 7 cm, ovate-deltoid, obtuse andmucronate, base cordate with narrow sinus and rounded auricles, margin slightly undulate, softly tomentose on both surfaces, abaxially grey, petioles 1 – 2 cm, tomentose. Inflorescence a dense cluster of up to 10 flowers at apex of a long peduncle; peduncles 3 – 10 cm, tomentose; bracteoles 5 – 13 mm long, ovate-rhomboid, tomentose, persistent; pedicels 5 – 10 mm; sepals tomentellous, accrescent in fruit, unequal, outer 8 – 12 × 5 – 8 mm, oblong-ovate, acute, base subcordate, inner 5 – 8 mm, oblong-ovate with broad chartaceous margins; corolla magenta, 5 – 6 cm long, funnel-shaped, glabrous except for a few hairs at apex of midpetaline bands in bud, limb c. 3 cm diam. Capsule ovoid; seeds reported as usually one.
Ipomoea longibarbis
Key: Bracteoles ± persistent; corolla 8 cm long
Ipomoea longibarbis J. R. I. Wood & R. W. Scotland, sp. nov. Type: Bolivia, Santa Cruz, Prov. Cordillera, Pie de la Muela del Diablo, Boyuibe-Camiri, J. R. I. Wood, D. Villarroel & B. Williams 27633 (holotype USZ; isotypes K, LPB, OXF).
Robust twining perennial usually 2 – 5 m high, stems pubescent, somewhat woody. Leaves petiolate, 4 – 13 × 3 – 12 cm, ovate, acute or shortly acuminate, terminating in a fine hair point, base shallowly cordate to truncate, margin slightly undulate, adaxially green, thinly adpressed-pubescent, abaxially grey, densely pubescent; petioles 3 – 10 cm, pubescent. Inflorescence of pedunculate axillary cymes with 1 – 8 flowers, somewhat dense; peduncle 4.5 – 26 cm, usually rather stout, pubescent; lower bracteoles 2 – 2.5 × 0.2 – 0.8 cm, oblong to oblong-elliptic; secondary peduncles 1.5 – 4 cm; upper bracteoles 9 – 18 × 1 mm, linear-lanceolate, terminating in a long fine point, pubescent, somewhat persistent; pedicels 2 – 10mm, pubescent; sepals slightly unequal, outer 11 – 16 × 6 – 7 mm, ovate, acuminate to a fine point, grey-pilose with conspicuous spreading hairs, inner ovate-elliptic, acute, silvery-pilose with hairs weakly spreading; corolla 8 cm long, uniformly pink, silky pubescent on the exterior, funnel-shaped, widening above middle, limb 5 cm diam., shallowly-lobed; stamens included, filaments unequal, glabrous apart from pubescent expanded basal part, shorter filaments 12mm, longer 15mm, anthers linear, 3.5 × 0.5mm; style 19 mm, glabrous, stigma obscurely bilobed. Capsule 10 – 11 × 10 mm, ovoid, glabrous, seeds 7 × 3 – 3.5 mm, brown, glabrous apart from the 10 mm long white marginal hairs.
Ipomoea hewittacea
Key: Leaves thinly pubescent on both surfaces; bracteoles lanceolate
Ipomoea hewittacea (Kuntze) J. R. I. Wood & R. W. Scotland, comb. nov.
Basionym: Convolvulus hewittaceus Kuntze, Revisio Generum plantarum Vol. 3: 213 (1898). Type: Brazil, Mato Grosso, O. Kuntze s.n. (holotype B†, isotype NY!).
Jacquemontia hewittacea (Kuntze) K. Schum. (Schumann 1900: 383).
Ipomoea piresii O’Donell (1952: 229), synon. nov. Type: Brazil, Maranhão, Pires & Black 1989 (holotype LIL!, isotypes P!, US!).
Perennial twining herb to 2 m, stem scabrous, pubescent, the hairs swollen at base. Leaves shortly petiolate, 2 – 6 × 1.5 – 4 cm, lanceolate to narrowly ovate, slightly constricted above base, acute, base sagittate with narrow sinus and ovate, sometimes shallowly bifurcate, acute auricles, both surfaces thinly pubescent but pubescence denser on veins and margins, abaxially paler; petioles 1 – 3 cm, pubescent. Inflorescence of pedunculate clusters of 3 – 4 flowers; peduncles 3 – 4.5 cm, pubescent; bracteoles 15 – 21 × 2 – 4 mm, lanceolate, acute or subacute, persistent; secondary peduncles and pedicels absent or very short so bracteoles ± appressed to the calyx; sepals unequal, acuminate, densely pilose and ciliate, outer 13 – 14 × 4 – 5mm, ovate, inner 10 – 11 × 2 –3mm, lanceolate; corolla 4 – 7 cm long, funnel-shaped, pink, pilose on midpetaline bands, limb 4 – 6 cm diam., undulate. Capsule globose, 7 – 8 × 7 – 8 mm, glabrous; seeds 4.5 × 3 mm, obovoid, minutely scabrous.
Ipomoea gypsophila
Key: Both leaf surfaces white-lanate
Ipomoea gypsophila J. R. I. Wood & R. W. Scotland, sp. nov. Type: Bolivia, Tarija, Prov. Aniceto Arce Ruiz, La Merced, 30 km de Padcaya hacia Bermejo, S. G. Beck, R. Kiesling & D. Metzing 22139 (holotype LPB; isotypes SI n.v., K (leaves only)).
Stout trailing or weakly ascending plant, stems lanate. Leaves petiolate, 7 – 10 × 6 – 10 cm, ovate, base cordate with rounded overlapping auricles, apex acute, adaxially appressed white-villous, abaxially densely white lanatetomentose, petiole 3 – 6 cm. Flowers 1 (– 3) in pedunculate, axillary cymes; peduncles 5 – 7 cm, lanate, straight or nearly so, bracteoles 2 – 3 mm, lanceolate, somewhat persistent; pedicels 8 mm; sepals subequal, 15 × 5 mm, oblong-lanceolate to oblong-ovate, obtuse, lanate; corolla 7 – 8 cm, funnel-shaped, uniformly pink, tomentose at base and on midpetaline bands, limb c. 5 cm diam. Capsule and seeds not seen.
Ipomoea sericosepala
Key: Sepals oblong, 8 – 14 mm long
Ipomoea sericosepala J. R. I. Wood & R. W. Scotland, nom. nov.
Basionym: Rivea cordata Choisy, Prodromus Systematis Naturalis 9: 326 (1845). Type: Brazil, Minas Gerais, San Francisco prope Salgado, Martius s.n. (lectotype M, designated by Austin & Staples 1991: 272), non Ipomoea cordata L. B. Sm. & B. G. Schub. (Smith & Schubert 1939).
Turbina cordata (Choisy) Austin & Staples (1983: 64).
Ipomoea martii Meisn. (Meisner 1869: 258), nom. illeg. Type: as for Rivea cordata.
Liana climbing high over shrubs to 7 m, stems whitetomentose, especially when young, latex white. Leaves petiolate, 4 – 8 × 8 – 9 cm, broadly ovate, apex acute and mucronate or (less commonly) obtuse or retuse, base truncate to shallowly cordate, adaxially glabrous, glabrescent or shortly pubescent, abaxially grey-sericeous with long silky hairs; petioles 1 – 6 cm, tomentose. Inflorescence of pedunculate axillary cymes, these often leafy and appearing to be side branches; peduncles 3 – 13 cm; bracts resembling small leaves; bracteoles c. 5 mm, linear-lanceolate, abaxially sericeous, caducous; secondary peduncles up to 9 cmlong; pedicels 6 – 32 mm; sepals unequal, outer 8 – 10 × 3 – 4 mm, oblong, obtuse and sometimes mucronate, sericeous, inner 11 – 14 × 6 mm, elliptic-obovate, rounded, mucronate, sericeous, the margins broad, scarious, glabrous; corolla 5 – 7 cm, funnel-shaped, pink, sericeous with long silky hairs, limb c. 5 cmdiam., shallowly lobed. Capsule ovoid, 14 – 18 × 7 – 10 mm, glabrous; seeds 1 – 2, narrowly ellipsoid, 8 – 10 mm, tomentellous.
Ipomoea psammophila
Key: Seeds glabrous; leaves green, entire. Cerrado/Chaco transition
Ipomoea psammophila J. R. I. Wood & R. W. Scotland, sp. nov. Type: Bolivia, Santa Cruz, Prov. Chiquitos, entrando hacia Motacú por San Juanama, near Santiago de Chiquitos, J. R. I. Wood, D. Soto, P. Pozo, W. Hawthorne & D. Villarroel 25122 (holotype USZ, isotypes K, LPB, UB).
Vigorous trailing perennial; rootstock, woody, forked; stems angled, obscurely bifariously puberulent, glabrescent. Leaves shortly petiolate, ovate, elliptic to suborbicular, apex emarginate and mucronate, obtuse or rounded, base truncate to very shallowly cordate, margin entire, green and glabrous on both surfaces, petioles 3 – 9 mm, glabrous to pubescent. Inflorescence of (1 – 2 –) 3 (– 5)-flowered axillary cymes; peduncles 1.5 – 9 cm, glabrous to very thinly pubescent; secondary peduncles (when present) 7 – 8 mm; bracteoles 1.5 × 0.5 mm, lanceolate, obtuse, caducous leaving a semi-circular scar; pedicels 3 – 10 mm, pubescent; sepals subequal, 11 – 12 mm long, outer sepals narrowly ovate, obtuse to subacute, puberulent to pubescent, inner sepals ovate-elliptic, thinly to densely pubescent, c. 1 mm longer, margins scarious; corolla 5 – 7 cm, pink, funnel-shaped, in bud pubescent, limb c. 7 cm wide, shallowly lobed; stamens included, filaments unequal, glabrous apart from the pubescent expanded basal part, shorter 12 – 13 mm, longer 20 – 21 mm; anthers linear, 4 × 0.5 mm; style 1.7 cm, glabrous, stigma subglobose. Capsule 13 × 10 mm, ovoid, rostrate with mucro 1.5 mm long, glabrous; seeds 7 × 3.5 mm, oblong, brown, glabrous, minutely scaly on margin.
Ipomoea appendiculata
Key: Sepals with a prominent swollen appendage; leaves glabrous
Ipomoea appendiculata J. R. I. Wood & R. W. Scotland, sp. nov. Type: Bolivia, Tarija, Prov. Gran Chaco, 10 – 20 km from Villamontes towards Palos Blancos, J. R. I. Wood, D. Villarroel & B. Williams 27607 (holotype USZ; isotypes K, LPB, OXF).
Vigorous liana climbing over other plants to c. 3 m, stems woody, pale brown, glabrous. Leaves petiolate, slightly succulent and often transversely folded, 5 – 7 × 4 – 5 cm, broadly ovate, shallowly cordate with rounded auricles, shortly acuminate to a mucronate apex, margin entire, both surfaces pale green and glabrous; petioles 2 – 3.5 cm, glabrous. Inflorescence of shortly pedunculate axillary cymes with up to five flowers; peduncles 2 – 3.5 cm, rigid, glabrous; bracteoles 2 – 4 × 1 mm, lanceolate, boat-shaped, scurfy puberulent, caducous; secondary and tertiary peduncles 1 – 2.5 cm; pedicels (1 –) 2.2 – 3 cm, straight, glabrous below, upwards thickened, scurfy puberulent; sepals subequal, 5 – 6 × 3 mm, puberulent, each with two swollen glabrous appendages on each side towards the base, outer sepals acute and mucronate, inner sepals obtuse, minutely mucronate, margins scarious, glabrous; corolla uniformly pink, puberulent in bud, glabrescent at anthesis, 6.5 – 7 cm long, funnel-shaped, limb 5 cm wide, undulate but not lobed; stamens included, filaments slightly unequal, glabrous apart from bearded basal part, shorter filaments 12 – 14 mm, longer c. 16 mm, anthers linear, 5 × 0.5 mm; style 3.5 cm, ovary glabrous. Capsule ovoid, 6 × 7 mm, glabrous; seeds 1.6 × 1 mm. ovoid, obtuse, brown, glabrous.
Ipomoea spinulifera
Key: Leaves pilose on abaxial veins
Ipomoea spinulifera J. R. I. Wood & R. W. Scotland, sp. nov. Type: Bolivia, Tarija, Prov. O’Connor, on descent from Caneletas to Narvaez, on road from Tarija to Entre Rios, J. R. I. Wood 27923 (holotype LPB; isotypes K, LPB, OXF).
Very vigorous liana-like perennial to 5 m; stems relatively stout, thinly pilose with long white hairs, spinulose with short triangular spines on angles. Leaves petiolate, 9 – 11 × 8 – 10 cm, ovate, base cordate with rounded auricles, apex acute to shortly mucronate, margin entire, adaxially green, glabrous, abaxially paler, veins pilose and highlighted with whitish hairs, intercostal regions glabrous; petioles 5 – 9 cm, thinly pilose. Inflorescence of long-pedunculate, lax, compound cymes comprising 5 – 10 flowers; primary peduncles very long, 17 – 21 cm, thinly pilose and with a few scattered stalked glands and spinules; secondary peduncles 3 – 3.5 cm, pilose; tertiary peduncles 2 – 3 cm; bracteoles 1.5 × 0.5 mm, oblong, caducous; pedicels 12 – 23 mm, densely white-pilose, bearded below flower; outer sepals 10 – 11 × 7 mm, ovate, obtuse to retuse, dark green when fresh, pubescent at centre near base, glabrous upwards and at margins, the scarious margins thin; inner sepals 10 – 11 × 8 mm, broadly elliptic, glabrous except near base, scarious margins broad; corolla 7.5 – 9 cm long, gradually widened from base, pink, in bud pubescent, limb c. 5 cm wide, undulate to weakly lobed; stamens included, filaments unequal, glabrous apart from the pubescent basal expanded part, shorter filaments 16 – 17 mm, longer 22 – 23 mm; anthers linear, 5 × 0.5 mm; style 3.2 cm, glabrous, ovary glabrous. Capsule and seeds not seen.
Ipomoea lactifera
Key: Sepals lacking white margins; corolla 3 – 4 cm long
Ipomoea lactifera J. R. I. Wood & R. W. Scotland, sp. nov. Type: Bolivia, Santa Cruz, Prov. Ichilo, 2 – 20 km from Buenavista along road to El Huaytu, J. R. I. Wood & D. Soto 27954 (holotype USZ; isotypes K, LPB, OXF).
Perennial twining herb of unknown height, latex white, stem glabrous. Leaves petiolate, 5 – 9 × 3.3 – 7 cm, ovate, base cordate and very broadly cuneate onto the petioles, auricles rounded, apex acuminate to a shortly mucronate apex, margin entire, glabrous except for an area of puberulence on veins and margin at base around point of insertion of petiole; petiole 2.2 – 6.8 cm, glabrous but thinly puberulent upwards. Inflorescence of long pedunculate, many-flowered, axillary cymes; peduncles 5 – 10 cm, glabrous, secondary peduncles 1.5 – 3 cm, bracteoles 1 × 1 mm, suborbicular, early caducous leaving a prominent basal scar, pedicels 8 – 14 mm, glabrous to slightly farinose; sepals glabrous or somewhat farinose, unequal, somewhat papery in texture, the margins slightly scarious but not conspicuously pale, outer 5 – 6.5 × 2.5 – 3 mm, oblong-obovate, rounded, the central vein prominent, slightly raised and terminating in a mucro, inner 7 – 8.5 × 5 mm, elliptic, rounded, minutely mucronulate with the mucro deciduous; corolla 3 – 4 cm, broadly funnel-shaped and gradually widened from base, limb 2 – 2.5 cm diam., white or very pale pink with darker centre, glabrous; filaments glabrous except at base, longer 11 – 13 mm, shorter 5 – 6 mm, anthers c. 3 mm long, oblong, ovary glabrous; style 17 – 20 mm long, stigma obscurely 2- lobed. Capsule and seeds not seen.
Ipomoea cryptica
Key: Outer sepal 1 – 3 mm long; leaves glabrous
Ipomoea cryptica J. R. I. Wood & R. W. Scotland, sp. nov. Type: Bolivia, Dep. Santa Cruz, Prov. Ichilo, 2 – 10 km from Buenavista along road to Huaytu, J. R. I. Wood & D. Soto 27955 (holotype USZ; isotypes K, LPB, OXF).
Twining perennial or liana to 5 m, stems glabrous. Leaves petiolate, ovate-deltoid, mostly 4 – 10 × 2 – 7.5 cm, base broadly cordate to subhastate, the auricles usually acute, sometimes rounded, apex acuminate to an obtuse and mucronate apex, both surfaces glabrous; petiole 1 – 5 cm, glabrous. Inflorescence of rather dense, 3 – 15-flowered, axillary, pedunculate cymes; peduncles 5 – 12 cm, glabrous; bracteoles ovate, acute, c. 2 mm long, caducous; secondary peduncles and pedicels short, 5 – 8 (– 13) mm, glabrous; sepals very unequal, glabrous, outer 1 – 3 mm long, suborbicular to elliptic, the margins scarious, inner 7 – 8 mm, broadly elliptic, rounded, margins broad, scarious; corolla 3.5 – 6 cm, glabrous, funnel-shaped, tube lilac, limb unlobed, 3.5 – 4 cm diam., pink; filaments glabrous except at base, longer 11mm, shorter 7 – 8 mm; anthers c. 4 mm long, oblong; ovary glabrous; style c. 15 mm long, stigma obscurely 2-lobed. Capsule and seeds not seen.
Ipomoea mucronatoproducta
Key: Corolla lobes terminating in a prominentmucro up to 5 mmlong; all sepals > 10mm long
Ipomoea mucronatoproducta J. R. I. Wood & R. W. Scotland, sp. nov. Type: Bolivia, Santa Cruz, Prov. Germán Busch, Rincón del Tigre, portón de la entrada a la Misión, sobre el camino hacia Carmen Rivero Tórrez, J. R. I. Wood & D. Villarroel 25474 (holotype USZ; isotypes K, LPB, UB).
Glabrous trailing herb, probably perennial, stems to 1.5 m long. Leaves petiolate, narrowly deltoid, 1.5 – 3.2 × 0.4 – 1 cm (measured above intersection with petiole), apex obtuse and minutely mucronate, base strongly sagittate, the auricles deltoid, lanceolate, acute, basally asymmetric, 1 – 2.5 × 0.2 – 0.6 cm so leaves sometimes appearing 3-lobed, both surfaces glabrous; petioles 1.1 – 2.7 cm. Inflorescence of solitary or paired, axillary, pedunculate flowers; peduncles 2.6 – 4 cm; bracteoles 2 – 3 × 1 mm, ovate, acuminate, caducous; secondary peduncles (when present) 10 mm, pedicels 6 – 16 mm, thickened upwards; sepals unequal, oblong-lanceolate, acuminate to a fine aristate point, outer shorter, 11 – 12 × 2 – 2.5 mm, inner 15 – 16 mm; corolla 7 – 8 cm, narrowly funnel-shaped with a long narrow basal tube, glabrous, tube deep pink inside, limb 5 – 6 cm diam., pale pink, unlobed, the midpetaline bands terminating in a fine point 5 – 6 mm long; stamens included, filaments unequal, glabrous apart from the pubescent basal expanded part, shorter filaments 10 mm, longer 15 mm; anthers linear, 3.5 × 0.5 mm; style 2.5 cm, glabrous, stigma obscurely bilobed. Capsule (immature) ovoid, 7 × 6 mm, glabrous; seeds not known.
Ipomoea paludicola
Key: Large-leaved plant of flooded pampa; outer sepals often muricate; corolla 7 – 8.5 cmlong
Ipomoea paludicola J. R. I. Wood & R. W. Scotland, nom. nov.
Basionym: Ipomoea serpens Meisn. (Meisner in Martius, Flora Brasiliensis 7: 275 (1869)). Type: Brazil, Minas Gerais, Rio das Velhas, Pohl 3173 (lectotype W 0052417, designated here, isolectotype W 0052416), non L. (Linnaeus 1759).
Erect, twining or trailing herb, glabrous in all vegetative parts; rootstock stout and somewhat tuberous; stems slightly succulent, often rooting at nodes. Leaves petiolate, sagittate, often strongly so, the auricles linear to lanceolate, acuminate or less commonly, rounded, 2 – 4 × 0.2 – 6 cm, the blade (excluding auricles) 2.5 – 7.5 × (0.1 –) 1.7 – 1.9 cm, lanceolate, narrowly to broadly oblong or oblong-elliptic, apex obtuse and mucronulate, green on both surfaces but somewhat darker adaxially; petioles 2 – 5 cm. Inflorescence of shortly pedunculate, axillary cymes, often reduced to a single flower; peduncles 0.5 – 3.5 cm; bracteoles 1 – 1.5 × 0.2 mm, deltoid, caducous; pedicels 8 – 15 mm; sepals very unequal, outer sepals 4 – 7 × 3 – 3.5mm, oblong, obtuse to rounded, mucronate, the mucro deciduous, dark green, often transversely muricate, margin scarious, inner sepals much larger, 8 – 14 × 5 mm, broadly oblong-obovate, rounded or retuse and mucronulate, the mucro deciduous, conspicuously pallid and subscarious; corolla 7 – 8.5 cm, pink, glabrous, funnel-shaped, limb 4 – 5 cm diam., unlobed; stamens included, filaments unequal, glabrous apart from the fleshy hairs on the basal expanded part, shorter filaments 10 – 11 mm, longer 16 – 17 mm, anthers linear, 4 × 0.5mm; style 2.4 – 2.6 cm, persistent, glabrous. Capsule 8 × 8 mm, ovoid, glabrous; seeds 4.5 × 3 mm, blackish, minutely puberulent.
Ipomoea juliagutierreziae
Key: Corolla funnel-shaped; small tree or subshrub with copious white latex, usualy leafless when flowering
Ipomoea juliagutierreziae J. R. I. Wood & R. W. Scotland, sp. nov. Type: Bolivia, Chuquisaca, Prov. Zudañez, Joya Charal, ANMI El Palmar, una hora de la comunidad en el sector denominado Almendras, “ladera expuesta al cerro Mojocoya con presencia de Harrisia, Capparis y Caesalpinia, suelo rocoso con musgos secos en el suelo. Especie creciendo sobre ramas de Leguminosa”, 18°35’20“S 64°50’14”W, 1610 m, J. Gutiérrez, L. Carrillo, N. Paucar & S. Peres-Cortez 2588 (holotype HSB; isotype fragment OXF).
Liana with white latex to 3.5 m, stems glabrous with pale brown bark. Leaves not present when plant flowering, petiolate, 4 – 5.5 × 2.5 – 4.5 cm, ovate, apex usually acute to shortly acuminate but occasionally rounded, minutely mucronate, base shallowly cordate to subtruncate, glabrous, abaxially paler, with prominent reddish-brown lateral veins, petioles 1 – 3 cm, very slender, glabrous. Inflorescence on raceme-like side branches at least 9 cm long; peduncles short, 3 mm, woody, glabrous, bracteoles, not seen; secondary peduncles 2 mm; pedicels c. 7 mm, widened upwards, glabrous, sepals subequal, 11 – 12 × 9 mm, broadly elliptic, rounded, glabrous, the margins scarious; corolla 5.5 – 6 cm long when pressed, shortly funnelshaped, the tube c. 3 cm long, c. 2 cm wide at mouth, white with dark red throat, limb 6.5 – 6.7 cm diam., unlobed; longer stamens held at corolla mouth, shorter included, anthers 4.5 mm; style held at corolla mouth, c. 2.2 cm, strongly bilobed, each lobe subglobose. Capsule (immature) ovoid, c. 15 mm long, glabrous; seeds (immature) pilose on the margins.
Ipomoea odontophylla
Key: Leaves dentate (Yungas de Mairana)
Ipomoea odontophylla J. R. I. Wood & R. W. Scotland, sp. nov. Type: Bolivia, Santa Cruz, Prov. Florida, bajando c. 3 km de La Yunga de Mairana, hacia el puesto de los guardeparques, J. R. I. Wood, M. Mendoza & C. Antezana 21431 (holotype USZ; isotypes K, LPB).
Twining perennial reaching 5 m in height, stems glabrous, pale brown. Leaves petiolate, 6 – 13 × 4 – 10 cm, ovate, deeply cordate with rounded auricles, apex acute to shortly acuminate, mucronate, margin denticulate with acute teeth, adaxially pubescent on the veins with scattered hairs on the intercostal areas, abaxially pubescent, veins prominent; petioles 3 – 8 cm, sparsely pubescent but the widened base strongly pubescent. Inflorescence of 1 – 5-flowered, pedunculate axillary cymes; peduncles 2.5 – 6 cm long, glabrous; bracteoles 1 – 2 × 0.5 mm, very narrowly lanceolate; pedicels 10 – 25 mm, notably thickened upwards and differing somewhat in texture from the peduncles, glabrous or with a few hairs at base of calyx; sepals subequal, outer 7 × 3 – 4 mm, lanceolate to ovate, acute or subacute, glabrous, margin scarious, inner sepals slightly larger, 8 × 4 – 5 mm, ovate to suborbicular, rounded, scarious except near base; corolla 4 – 5.5 cm, funnel-shaped, glabrous, tube white, limb blue, drying pink, c. 3.5 cm diam., shallowly lobed; stamens included, slightly unequal, glabrous apart from the thinly pilose base, shorter filaments 15 – 16 mm, longer 17 – 18 mm, anthers 4 mm; style 3 cm, glabrous, stigma weakly 2- lobed. Capsule 16 × 13 mm, ovoid, glabrous, rostrate, the mucro c. 3 mm long; seeds 9 × 4 mm, oblong in outline, brown, glabrous.
Ipomoea huayllae
Key: Corolla blue; sepals with spreading hairs; peduncle passing through sinus of leaf base (Yungas)
Ipomoea huayllae J. R. I. Wood & R. W. Scotland, sp. nov. Type: Bolivia, La Paz, Prov. Tamayo, ANMI Apolobamba, camino Pelechuco-Apolo, entre Puente Coronara y Hac. Corapara, A. Fuentes & H. Huaylla 12939 (holotype LPB; isotypes K, MO, OXF).
Twining herb, possibly annual, stems thinly pubescent with spreading hairs when young, glabrescent when older. Leaves petiolate, 6 – 10 × 3 – 7 cm, ovate, acute and finely mucronate, base cordate with rounded auricles, margin entire to slightly undulate; petioles 1 – 7 cm, pubescent. Inflorescence of solitary axillary flowers (rarely a second, non-developing flower present); peduncle, 3 – 5.5 cm, pubescent, penetrating leaf sinus; bracteoles 1 × 0.25 mm, deltoid, obtuse, green with white margins; pedicels 6 – 12 mm, thickened upwards, pubescent; sepals slightly unequal, outer 6 × 2.5mm, acute, green, pubescent, the hairs with swollen bases, margins scarious, glabrous, inner sepals 7 – 9 × 4 mm, broadly oblong-elliptic, minutely mucronate, only the middle green and pilose, the margins and apex scarious, glabrous; corolla glabrous, 4 cm long, funnel-shaped with the rim of the limb recurved, pale blue with whitish tube and midpetaline bands, limb c. 4 cm diam., unlobed, midpetaline bands ending in a point; filaments glabrous except glandular-pilose base, unequal, longer c. 12 mm, shorter c. 6 mm; anthers oblong, 2.5 × 0.75 mm; style 16 mm, glabrous, stigma not seen. Capsule glabrous, ovoid, 14 – 15 × 11 mm, seeds 7 × 6 mm, flattened-ovoid, dark brown, superficially glabrous but minutely pilosellous under a microscope.
Ipomoea paradae
Key: Leaves white-tomentose beneath
Ipomoea paradae J. R. I. Wood & R. W. Scotland sp. nov. Type: Bolivia, Santa Cruz, Vallegrande, camino Algodonal a Masicurí, G. A. Parada, M. Betancur & Y. Inturion 3151 (holotype USZ; isotypes K, MO).
http://www.ipni.org/urn:lsid:ipni.org:names:77148130-1 Liana reaching at least 5 m in height, stems woody, glabrous, obscurely ridged, bark pale brown. Leaves petiolate, 6 – 12 × 5.5 – 11 cm, ovate, obtuse and mucronate, base cordate with rounded auricles, adaxially green, thinly pubescent, abaxially greytomentose with highlighted veins; petioles 3 – 5 cm, puberulent. Inflorescence of 1 – 5-flowered, axillary, pedunculate cymes; peduncles 1 – 3.5 cm, glabrous except for hairs apically; secondary peduncles 1 – 1.4 cm, pubescent; bracteoles 10 – 14 × 8 – 10mm, oblong-ovate, obtuse, pubescent, deciduous; pedicels 8 – 12 mm, markedly widened upwards, hirsute below, glabrous upwards; sepals subequal, 15 – 18 × 10 – 14 mm, broadly elliptic-obovate, rounded, glabrous, margins scarious; corolla 9 – 10 cm long, white with pink centre, funnelshaped with cylindrical basal tube c. 12 mm long, glabrous, midpetaline bands ending in a small tooth, limb c. 5 – 6 cm diam., very shallowly lobed; stamens unequal, longer filaments c. 14 mm, shorter filaments c. 10 mm; anthers 6 mm; style c. 2.5 cm; stigma bilobed. Capsule ovoid, 20 × 15 mm, glabrous; seeds 10 × 6 mm, flattened ellipsoid, dark brown, long-pilose, the marginal hairs up to 20 mm.
To be continued…
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