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40. Ipomoea ×leucantha Jacquin, Icon. Pl. Rar. 2: 10, plate 318. 1788. (as species).
Whitestar morning glory
Annuals. Stems usually twining, sometimes trailing. Leaf blades orbiculate, ovate, or 3–5-lobed, 20–80 × 20–70 mm, base cordate, surfaces glabrous or sparsely hairy. Peduncles glabrous. Flowers: sepals lanceolate, (8–)10–14 mm, chartaceous or coriaceous, apex acuminate, surfaces glabrous; corolla lavender or white, throat usually darker, funnelform, 6–15(–20) mm, limb to 10+ mm diam. Fruits 7–8 mm diam.
Flowering Aug–Oct. Disturbed sites; 0–700 m; Ariz., Fla., La., Miss., S.C., Tex., Va.; Mexico; West Indies; Central America; South America.
In the southeastern United States, Ipomoea × leucantha results from crosses between I. cordatotriloba and I. lacunosa that may be effected by honeybees (Apis mellifera); elsewhere, I. × leucantha is presumably introduced.
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