Unarmed trees or large shrubs. Leaves imparipinnate; stipules small and rapidly deciduous or absent; leaflets opposite or subopposite, petiolulate, coriaceous. Inflorescence paniculate, terminal or axillary. Flowers bisexual, regular or nearly so, yellow; bracts and bracteoles rapidly deciduous. Sepals 3-5, subequal or the outer two slightly larger, imbricate. Petals usually 3-5, with upper inner petal sometimes absent, alternating with the sepals, subequal. Stamens usually 4-10, free, all fertile; filaments usually filiform. Anthers linear, basifixed; locules opening at the apex by short lateral slits. Ovary sessile or nearly so, free, 1-chambered, mostly 4-6-ovulate; style shortly curved; stigma terminal, small. Fruit oblong to slightly falcate, compressed, winged along the upper suture, 2-valved, coriaceous, dehiscent but sometimes tardily so. Seeds compressed, 1-5.