Trees or large shrubs, evergreen or deciduous. Leaves simple, alternate or rarely opposite, usually distichous, petiolate; leaf blade pinnately-veined, basally 3- (or 5)-veined, margin entire or serrate, usually with oblique bases; stipules usually membranous, caducous. Flowers monochlamydeous, small, bisexual (or rarely unisexual) or polygamous; solitary, cymose or in axillary clusters. Perianth 4-8(-9), campanulate, lobes imbricate (or rarely valvate) persistent or (caducous). Stamens usually as many as and opposite the perianth lobes (or fewer), basally adnate to tepals; filaments free; anthers bithecous, dehiscence longitudinal. Carpels 2, syncarpous; ovary superior, 1- or (2)-locular, ovule 1, suspended; styles 1, short; stigmas 2, linear. Fruit samara, drupes or winged nutlets, usually with persistent stigmas apically.
7 genera and 58 species