Neoporteria pilispina f. pygmaea (F.Ritter) Donald & G.D.Rowley in Cact. Succ. J. Gr. Brit. 28: 57. 1966
Neoporteria pilispina f. pygmaea in Cact. Succ. J. Gr. Brit. 28: 57. 1966
is new combination for Pyrrhocactus pygmaeus in Taxon 12: 32. 1963