Neoporteria simulans (F.Ritter) Donald & G.D.Rowley in Cact. Succ. J. Gr. Brit. 28: 58. 1966 Neoporteria simulans (F.Ritter) Donald & G.D.Rowley in Cact. Succ. J. Gr. Brit. 28: 58. 1966is new combination for Pyrrhocactus simulans F.Ritter in Succulenta (Netherlands) 1961: 35. 1961Taxon for this nameNeoporteria simulans (F.Ritter) Donald & G.D.Rowley