Shrubs or trees. Leaves opposite or the upper alternate, simple. Inflorescences of showy flowers in axillary or terminal panicles. Calyx turbinate or hemispherical, usually 5-8-lobed; tube straight. Petals 5-8, clawed; limb often crinkled or fringed. Stamens numerous. Ovary 3-6-locular. Fruit a woody capsule, loculicidally dehiscent by 3-6 valves. Seeds winged.