Phyllanthopsis phyllanthoides, commonly called buckbrush or maidenbush, is a flowering plant in the family Phyllanthaceae. It is native to Mexico (where it is found in Nuevo León) and the United States (where it is found primarily South Central region). Its natural habitat is on limestone or dolomite rock outcrops, particularly in seepy shelves along rivers, but also in upland areas such as glades and bluffs.