×Seleniporocactus G.D.Rowley in Natl. Cact. Succ. J. 37: 79. 1982 ×Seleniporocactus G.D.Rowley in Natl. Cact. Succ. J. 37: 79. 1982Taxon for this name×Seleniporocactus G.D.Rowley in Natl. Cact. Succ. J. 37: 79. 1982