Ferocactus pottsii var. alamosanus (Britton & Rose) G.Unger in Kakteen And. Sukk. 22: 187. 1971
Ferocactus pottsii var. alamosanus in Kakteen And. Sukk. 22: 187. 1971
is new combination for Echinocactus alamosanus in Contr. U.S. Natl. Herb. 16: 239, t. 66. 1913