Mammillaria petrophila subsp. baxteriana (H.E.Gates) D.R.Hunt, Mammillaria Postscripts 7: 3. 1998
Mammillaria petrophila subsp. baxteriana, Mammillaria Postscripts 7: 3. 1998
is new combination for Neomammillaria baxteriana in Cact. Succ. J. (Los Angeles) 6: 3. 1934
Mammillaria petrophila subsp. baxteriana, Mammillaria Postscripts 7: 3. 1998