Sclerocactus cloverae subsp. brackii K.D.Heil & J.M.Porter in Haseltonia 2: 33–34, f. 5. 1994
Sclerocactus cloverae subsp. brackii in Haseltonia 2: 33–34, f. 5. 1994
is basionym for Pediocactus cloverae subsp. brackii in Acta Mus. Richnov., Sect. Nat., 5: 15. 1998