Shrubs, climbing, twining, or erect. Leaves opposite, or alternate, simple or imparipinnate. Flowers attractive, frequently fragrant, cymes tri-or dichotomous, simple, or flowers solitary. Calyx 4-9-fid, teeth linear, long or short, or almost truncate. Corolla 1 cm in diameter or more, salver-shaped, white or yellow, tube narrow; lobes (4-)5-9(-10), patent, imbricate in bud. Flowers often heterostylous. Berry didymous or simple (by abortion); each part globose, ellipsoid or elongated, containing 1-2 seeds; cultivated species frequently without berries.