Ferocactus acanthodes var. rostii (Britton & Rose) W.T.Marshall in Marshall & Bock, Cactaceae: 148. 1941
Ferocactus acanthodes var. rostii in Marshall & Bock, Cactaceae: 148. 1941
is new combination for Ferocactus rostii, Cactaceae 3: 146. 1922