Ferocactus chrysacanthus subsp. chrysacanthus sec. Hunt 2006
- =Echinocactus rubrispinus Ford ex Orcutt, Rev. Cact. 1(2): 56. 1899 syn. sec. TROPICOS 1988+
- ≡Ferocactus chrysacanthus f. rubrispinus (Ford ex Orcutt) G.Unger, Grossen Kugelkakteen Nordamerikas: 210. 1992 syn. sec. TROPICOS 1988+