Dioecious or polygamodioecious, deciduous or evergreen trees. Leaves alternate, pinnate, malodorous; leaflets opposite or subopposite. Inflorescence a terminal or axillary panicle. Calyx 5-(rarely 6-)lobed; petals as many as calyx lobes; stamens (and staminodes if present) 10, filaments lacking a basal scale; nectary disc annular, 10-lobed, internal to stamens, external to carpels; male flowers with or without pistillodes; female flowers with or without staminodes; carpels 2–5, free, styles free or united. Fruit a samara.
5 species, tropical or subtropical, extending from Asia Minor eastwards through Asia to Australia and the Solomon Islands; 3 species (1 introduced) in Australia.