Capparideae
An order of herbs or shrubs, rarely trees. Flowers clustered, or solitary; sepals four to eight, imbricate or valvate; petals four, arranged crosswise, sometimes, but rarely, five, or eight, rarely absent. Leaves alternate, very rarely opposite, stipulate or exstipulate. The order is distributed throughout the tropical and warm temperate regions of both hemispheres, the frutescent species being largely represented in America. There are about twenty-three genera--the best-known being Capparis, Cleome, and Crataeva--and about 300 species.