Herbs, rarely shrubs. Leaves digitately 3 foliolate. Flowers solitary or subumbellate, bisexual, pentamerous, hypogynous. Sepals 5, free. Petals 5, contorted. Stamens 10, obdiplostemonous, connate at the base. Ovary quinquilocular, placentation axile. Styles 5, persistent, free. Fruit a loculicidal capsule. Seeds usually many.