Cactus radiosus var. arizonicus (Engelm.) J.M.Coult. in Contr. U.S. Natl. Herb. 3: 121. 1894
Cactus radiosus var. arizonicus in Contr. U.S. Natl. Herb. 3: 121. 1894
is new combination for Mammillaria arizonica, Bot. California 1: 244. 1876
Cactus radiosus var. arizonicus in Contr. U.S. Natl. Herb. 3: 121. 1894
Taxon for this name