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Herbaceous or woody twiners, usually hairy. Leaves petioled, ovate to orbicular, often cordate at the base, entire to 3-or 5-lobed, herbaceous. Flowers in dense, axillary, sessile or shortly peduncled cymes. Bracts small, caducous. Sepals 5, subequal, herbaceous or subcoriaceous, acute or obtuse, hairy or glabrous. Corolla regular, rather small, yellowish-white, urceolate, with a shortly 5-lobed limb; midpetaline bands hairy outside. Stamens and style included. Filaments inserted near the base of the corolla, dilated in their basal portion into a large concave scale, arched over the ovary; pollen globular, spinulose. Disk large, annular or cupular. Ovary glabrous or hairy, 2-celled, each cell with 2 ovules. Style 1, very short; stigmas 2, capitate. Capsule 4-valved, with 4 or less glabrous or puberu-lous seeds.
Herbaceous or woody twiners. Flowers in dense, axillary, sessile or peduncled cymes. Sepals 5, subequal, herbaceous or subcoriaceous, acute or obtuse, hairy or glabrous. Corolla urceolate, the tube narrowing upwards; limb shortly 5-lobed. Filaments inserted near the base of the corolla, dilated in their basal portions into large concave scales which arch over the ovary; pollen spinulose. Ovary glabrous or hairy, 2-locular, each loculus with 2 ovules; style 1, very short; stigmas 2, capitate, or one, bilobed. Capsule 4-valved or almost indehiscent. Seeds 4.
Stamens inserted low down in the corolla tube, dilated in their basal portions into large concave scales which arch over the ovary; pollen spinulose.
Ovary glabrous or hairy, bilocular, each loculus with 2 ovules; style 1, very short; stigmas 2, capitate, or one, bilobed.
Leaves petioled; lamina broad, ovate to circular, entire or lobed, often cordate at the base.
Sepals 5, subequal, herbaceous or subcoriaceous, acute or obtuse, hairy or glabrous.
Corolla urceolate, the tube narrowing upwards; limb shortly 5-lobed.
Flowers in dense, axillary, sessile or peduncled cymes.
Herbaceous or woody twiners, usually hairy.
Capsule 4-valved or almost indehiscent.
Seeds 4.
