Ipomoea L.
Fls 5-merous, large, ebracteate, axillary, solitary or in cymes. Outer calyx-lobes or sepals us. > inner, erect. Corolla us. broad-funnelform, limb sts angled or lobed. Staminal filaments filiform, sts dilated at base. Ovary us. 2-loculed, 4-ovuled. Style filiform, stigma capitate or with 2 globose lobes. Capsule us. subglobose, 4-valved. Seeds glab. or pubescent. Twining prostrate or scrambling herbs, often lianoid, with alt. variously cut lvs. A widespread, mostly maritime, genus of some 450 spp.
