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 |