Ferocactus fordii var. grandiflorus G.E.Linds. in Cact. Succ. J. (Los Angeles) 27: 164, f. 154. 1955
Ferocactus fordii var. grandiflorus in Cact. Succ. J. (Los Angeles) 27: 164, f. 154. 1955
is basionym for Ferocactus chrysacanthus subsp. grandiflorus in Cactaceae Consensus Init. 6: 15. 1998
is basionym for Ferocactus grandiflorus, Grossen Kugelkakteen Nordamerikas: 242. 1992