Trees, shrubs or climbers, rarely herbs. Leaves alternate or opposite, usually compound, rarely simple; leaflets opposite to alternate, entire to lobed; exstipulate or stipules caducous. Flowers small, usually in panicles, thyrses, sometimes in cymes or fascicles, actinomorphic or obliquely zygomorphic, unisexual, rarely polygamous or bisexual, hypogynous; bracts and bracteoles small. Sepals (3-) 4-5 (or 6), equal or unequal, free or connate at base, imbricate or valvate. Petals (3-) 4-5 (or 6), sometimes absent, free, imbricate, usually clawed, often bearded or bearing a scale within. Disc usually distinct, annular or unilateral, sometimes of separate glands, rarely wanting in male flowers. Stamens 5-10, usually 8, rarely numerous, inserted inside, on or outside disc; filaments usually free, often pubescent; anthers bithecous, basifixed or versatile; staminodes sometimes present in female flowers. Ovary superior, centric or eccentric, entire, lobed or partite nearly to base, 1-4(-6)-locular, ovules 1-2, rarely more in each loculus, usually axile placentation, rarely parietal; style simple or divided, usually terminal. Fruit capsular or indehiscent nut or berry, sometimes winged samaras. Seeds globose to oblong or compressed, usually exalbuminous, sometimes arillate (Litchi).
143 genera and about 1478 species