Ferocactus macrodiscus var. septentrionalis J.Meyrán in Cact. Suc. Mex. 32: 52. 1987
Ferocactus macrodiscus var. septentrionalis in Cact. Suc. Mex. 32: 52. 1987
is basionym for Ferocactus macrodiscus subsp. septentrionalis in Cactaceae Consensus Init. 5: 13. 1998
is basionym for Bisnaga macrodisca subsp. septentrionalis in Sukkulenty 2: 29. 1999