Ipomoea fistulosa Martius ex Choisy in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 9: 349. 1845; I. crassicaulis (Bentham) B. L. Robinson

Shrubs [lianas]. Stems erect, [scrambling or twining]. Leaf blades lanceolate, ± orbiculate, or ovate, 70–250+ × 40–170 mm, base cordate or ± truncate, surfaces puberulent to gla­brate. Peduncles puberulent. Flowers: sepals ± orbicu­late, 3–7 mm, chartaceous or coriaceous, apex rounded; corolla usually lavender or red-purple, sometimes white, throat darker, funnelform, 40–90 mm. 2n = 30.

Flowering Jan–Nov. Marshy sites, swamps; 0–1000 m; introduced; Fla., Tex.; Mexico; West Indies; Central America; South America; introduced also in Asia.