Perennials. Stems twining. Leaf blades cordate-ovate, lance-ovate, ovate, or 3–5(–7)-lobed, 10–90 × 10–90 mm, base cor­date, lobes usually rounded, some­times pointed, surfaces usu­ally hirsute, pilose, or tomen­tose, rarely glabrous. Peduncles glabrous or hairy, hairs appressed. Flowers: sepals lanceolate to ovate, 8–14 mm, chartaceous or coriaceous, outers lance-ovate to lanceolate, narrowed distal portion curved, glabrous or hairy, inners ovate, margins ciliate or not, abaxial surface glabrous or hairy; corolla lavender, tube darker, funnelform, 20–38 mm.

Distribution

United States, Mexico, South America.

Discussion

Varieties 3 (2 in the flora).

Variety australis (O’Donnell) D. F. Austin is known from Argentina.

Varieties cordatotriloba and torreyana appear to differ by minor, trivial traits; nevertheless, they have distinctive aspects and, historically, distinct ranges and habitats. Both have been dispersed by humans and may appear sporadically in places outside their historical ranges.

Selected References

None.

Lower Taxa

Ipomoea cordatotriloba var. cordatotriloba, Ipomoea cordatotriloba var. torreyana

Key

1	Leaf blade surfaces usually hirsute, pilose, or tomentose, rarely glabrous; sepals hispid-pilose and/or ciliate.	Ipomoea cordatotriloba var. cordatotriloba
1	Leaf blade surfaces glabrous; sepals glabrous.	Ipomoea cordatotriloba var. torreyana