Mammillaria pondii subsp. setispina (Engelm. ex J.M.Coult.) D.R.Hunt, Mammillaria Postscripts 6: 5. 1997
Mammillaria pondii subsp. setispina, Mammillaria Postscripts 6: 5. 1997
is new combination for Cactus setispinus in Contr. U.S. Natl. Herb. 3(2): 106. 1894