Woody climbers. Leaves palmately 3-7-nerved at the base, ± broadly ovate. Inflorescences: pedunculate cymes, one to few supra-axillary or racemosely arranged. Male flowers: sepals 6, outer 3 usually narrower than inner 3; petals 6 with sides folded inwards around the opposite stamen, glabrous; stamens 6, free; anthers dehiscing transversely, ± introrse, the cells separated abaxially by the thickened connective. Female flowers: sepals 6-9; petals 0; staminodes 6, claviform; carpels 3; stigmas recurved, flattened. Drupe curved with style-scar near base; endocarp rotund to obovate in outline with entire dorsal wing and prominent lateral horseshoe-shaped or cucullate crests. Seed curved; embryo imbedded in endosperm, narrow with radicle slightly longer than cotyledons.