Ferocactus diguetii var. carmenensis G.E.Linds. in Cact. Succ. J. (Los Angeles) 27: 167. 1955
Ferocactus diguetii var. carmenensis in Cact. Succ. J. (Los Angeles) 27: 167. 1955
is basionym for Ferocactus diguetii subsp. carmenensis, Ferokakt. Baja California: 93. 2004