Neomammillaria baxteriana H.E.Gates in Cact. Succ. J. (Los Angeles) 6: 3. 1934
Neomammillaria baxteriana in Cact. Succ. J. (Los Angeles) 6: 3. 1934
is basionym for Mammillaria petrophila subsp. baxteriana, Mammillaria Postscripts 7: 3. 1998
is basionym for Mammillaria baxteriana, Kaktus-ABC: 398. 1935