Trees or shrubs, the branchlets terete. Leaves opposite, petiolate; stipules oblong or obovate. Inflorescences terminal or axillary, paniculate. Flowers with the calycine cup cup-shaped, the teeth 5, persistent; corolla funnelform or sal-verform, the lobes 5, in bud drawn in so as to give a maltese cross pattern in top view, spreading at anthesis, wider than long, pubescent within, valvate or redu-plicate; anthers oblong, included, the filaments partly villose; ovary 2-celled, the ovules numerous. Fruits capsular, bisulcate, dehiscing loculicidally into 2 valves; seeds winged.