Evergreen trees with buttressed trunks, glabrous. Leaves alternate, entire, lateral veins parallel; petiole geniculate; stipules ovate or lanceolate, membranous, stipular scar conspicuous. Inflorescences axillary, cymose, paniculate, or racemose. Flowers bisexual, 5-merous. Disk fleshy, cupular to plate-form, 5-lobed, intrastaminal; anthers longitudinally dehiscent, introrse. Ovary 2-locular, glabrous or apically pubescent; ovules erect, 2 per locule. Capsule 2-valved or fusiform, leathery, loculicidally dehiscent. Seeds 1 or 2, oblong; aril basal or enveloping seed.

Five species: tropical Asia; one species in China.

(Authors: Ma Jinshuang (马金双); A. Michele Funston)