Neoporteria dimorpha (F.Ritter) Donald & G.D.Rowley in Cact. Succ. J. Gr. Brit. 28: 56. 1966 Neoporteria dimorpha (F.Ritter) Donald & G.D.Rowley in Cact. Succ. J. Gr. Brit. 28: 56. 1966is new combination for Pyrrhocactus dimorphus F.Ritter in Succulenta (Netherlands) 1962: 3. 1962Taxon for this nameNeoporteria dimorpha (F.Ritter) Donald & G.D.Rowley