Neoporteria marksianus (F.Ritter) Donald & G.D.Rowley in Cact. Succ. J. Gr. Brit. 28: 57. 1966
Neoporteria marksianus in Cact. Succ. J. Gr. Brit. 28: 57. 1966
is new combination for Pyrrhocactus marksianus in Succulenta (Netherlands) 1960: 2. 1960
non Neoporteria marksiana in Cact. Succ. J. Gr. Brit. 28: 57. 1966