Flowers diœcious, apetalous. Male: Sepals 5, imbricate. Stamens 18; anthers subsessile, smooth, 2-celled, dehiscence longitudinal. Rudimentary ovary 0. Female: Calyx 6-partite. Disk urceolate; ovary 3-celled; styles thick, with 3 free stout stigmas. Fruit capsular, 3-coccous; cocci opening loculicidally from the base upwards; pericarp coriaceous. Seeds large, globose; embryo small, cotyledons broad, flat. —Shrub, climbing; leaves alternate, unequally petioled; petioles pulvinate at the base and apex; flowers racemose; racemes axillary; pedicels thickened.