 The largest genera are "Capparis" (about 150 species), "Maerua" (about 100 species), "Boscia" (37 species) and "Cadaba" (30 species).The Capparaceae have long been considered closely related to and have often been included in the Brassicaceae, the mustard family (APG, 1998), in part because both groups produce glucosinolate (mustard oil) compounds.Subsequent molecular studies support Capparaceae" sensu stricto" as paraphyletic with respect to the Brassicaceae.