Pyrrhocactus robustus var. vegasanus F.Ritter in Succulenta (Netherlands) 1960: 65. 1960
Pyrrhocactus robustus var. vegasanus in Succulenta (Netherlands) 1960: 65. 1960
is basionym for Neochilenia robusta var. vegasana, Cactaceae 6: 3783. 1962
is basionym for Neoporteria tuberisulcata var. vegasana in Cact. Succ. J. Gr. Brit. 28: 58. 1966