Neoporteria eriocephala var. glaucescens (F.Ritter) Donald & G.D.Rowley in Cact. Succ. J. Gr. Brit. 28: 56. 1966
Neoporteria eriocephala var. glaucescens in Cact. Succ. J. Gr. Brit. 28: 56. 1966
is new combination for Pyrrhocactus glaucescens in Taxon 12: 33. 1963