Ferocactus hamatacanthus var. sinuatus (A.Dietr.) L.D.Benson in Cact. Succ. J. (Los Angeles) 41: 128. 1969
Ferocactus hamatacanthus var. sinuatus in Cact. Succ. J. (Los Angeles) 41: 128. 1969
is new combination for Echinocactus sinuatus in Allg. Gartenzeitung 19(44): 345–346. 1851