34. Ipomoea tricolor Cavanilles, Icon. 3: 5, plate 208. 1795.
[I W]
Heavenly blue morning glory
Annuals. Stems twining. Leaf blades ± cordate, 60–100 × 25–130 mm, base cordate, surfaces glabrous. Peduncles glabrous. Flowers: sepals lance-ovate, triangular, or oblong-triangular, (4–)6–7 mm, coriaceous, margins scarious, apex acute, abaxial surface muriculate, glabrous; corolla usually blue to deep blue, sometimes white, tube white outside, pale yellow inside, funnelform, 35–60 mm, limb 50–90 mm diam.
Flowering Oct–Dec. Abandoned plantings, thickets; 20–1900 m; introduced; Ala., Ariz., Ark., Fla., Ga., Ky., La., Miss., Mo., N.C., Pa., S.C., Tex.; Mexico; West Indies; Central America; South America.
Ipomoea tricolor is native in Mexico and has long been cultivated in North America.
The name Ipomoea violacea has been misapplied to plants of I. tricolor.
