Annual, biennial or perennial herbs or shrubs. Leaves simple and palmately lobed or digitately compound. Flowers usually solitary and axillary, but often forming terminal inflorescences by reduction of the upper leaves, yellow with a dark centre or red, pink, purplish or white. Epicalyx of 5-20 bracts, rarely 0. Calyx with 5 lobes or (rarely) 5-10 teeth. Ovary 4-5-locular; each loculus with 3-many ovules. Style 5-branched. Fruit a loculicidally dehiscent capsule.