evergreen or deciduous shrubs or small trees. Leaves opposite or verticillate,
entire, short petiolate, stipules connate. Flowers solitary, terminal, often
overtopped and displaced laterally, 5 to 12-merous. Calyx subentire, regularly
divided or obliquely cleft. Corolla hypocrateriform, large. Anthers subsessile,
inserted on corolla tube, included to largely exserted. Ovary 1-locular or
partially 2-locular with 2-8 parietal placentae, styles narrowly clavate,
included at corolla throat to well exserted. Fruits fleshy, usually with
persistent calyx, often bony within. Seeds numerous, 1 mm long.