Mammillaria setispina Engelm. ex J.M.Coult. in Contr. U.S. Natl. Herb. 3: 106. 1894 Mammillaria setispina Engelm. ex J.M.Coult. in Contr. U.S. Natl. Herb. 3: 106. 1894is new combination for Cactus setispinus Engelm. ex J.M.Coult. in Contr. U.S. Natl. Herb. 3(2): 106. 1894Taxon for this nameMammillaria setispina Engelm. ex J.M.Coult.