Ferocactus tortulispinus H.E.Gates in Cact. Succ. J. (Los Angeles) 4: 343. 1933
Ferocactus tortulispinus in Cact. Succ. J. (Los Angeles) 4: 343. 1933
is basionym for Ferocactus cylindraceus subsp. tortulispinus in Cactaceae Consensus Init. 6: 16. 1998
is basionym for Ferocactus acanthodes subsp. tortulispinus, Ferokakt. Baja California: 25. 2004
is basionym for Ferocactus cylindraceus var. tortulispinus in Cact. Suc. Mex. 25: 65. 1980
is basionym for Ferocactus gracilis subsp. tortulispinus in Cact.-Avent. Int. 100: 29. 2013
is basionym for Ferocactus acanthodes var. tortulispinus in Cact. Succ. J. (Los Angeles) 27: 168. 1955