Annual or perennial herbs or shrubs, rarely trees. Leaves simple, alternate or opposite, occasionally whorled, entire or toothed; stipules usually caducous or absent. Flowers usually bisexual, actinomorphic or zygomorphic, 2-7- merous, epigynous, axillary solitary or in racemes. Sepals 2-7, calyx tube adnate to ovary, lobes valvate. Petals 2-7 (rarely absent), free. Stamens as many as or twice as many as the sepals, inserted with the petals on top of ovary; filaments thread-like; anthers bithecous, versatile or basifixed. Ovary inferior with as many carpels and locules as sepals, sometimes septa thin or absent on maturity, placentation axile or parietal, ovules 1-many per loculus in 1 or several rows; style single; stigma lobed (lobes as many as sepals), clavate or globose. Fruit a loculicidal capsule, or indehiscent nut or berry. Seeds small, smooth or variously sculptured, with a coma or wings or lacking both.
22 genera and about 720 species