Cyclea Arn. ex Wight

Vines. Petiole usually long; leaf blade peltate, palmately veined. Inflorescences axillary, terminal or on old stems, thyrsoid, usually narrow, rarely broad and sparse; bracts small. Male flowers: sepals usually 4 or 5(or 6), usually connate, 4-or 5-lobed, rarely free; petals 4 or 5, usually connate, entire or 4-8-lobed, rarely free, sometimes absent; stamens 4 or 5, connate into a peltate synandrium, anthers dehiscing transversely. Female flowers: sepals and petals 1 or 2, opposite to each other, rarely absent; carpel 1, stigma short, 3-or many lobed. Drupes obovate-globose to rotund, often slightly flat, style scar near base; endocarp bony, horseshoe-shaped, abaxially bearing 2 or 3 rows of tubercles on both surfaces of rib; condyle usually 1 or 2 cavities, often perforate between style scar and base. Seed horseshoe-shaped; embryo terete, embedded in endosperm.