Echinocactus sellowii var. macrocanthus Arechav.
Echinocactus sellowii var. macrocanthus
is basionym for Notocactus macrocanthus in Kakteen Sukk. 14: 59. 1980 ["1979"]
is basionym for Notocactus sellowii f. macracanthus in Internoto 14(2): 72. 1993
is basionym for Notocactus sellowii var. macracanthus in Succulenta (Netherlands) 60: 141. 1981
is basionym for Malacocarpus macrocanthus in Revista Sudamer. Bot. 7: 216. 1943
is basionym for Wigginsia macrocantha in Taxon 13(6): 210. 1964