Shrubs or herbs. Leaves simple, entire, opposite or sometimes alternate, mostly with stellate indumentum. Inflorescences of cymes or flowers solitary. Flowers bisexual, actinomorphic. Sepals 5, the outer 2 smaller, sometimes 0, the inner 3 larger, persistent. Petals 5, rarely 0, caducous. Stamens numerous. Ovary superior, 1-locular or falsely 5-10-locular. Style simple or 0. Fruit a loculicidally dehiscent capsule.