Mammillaria petrophila subsp. petrophila sec. Hunt 2016
- =Mammillaria gatesii M.E.Jones in Cact. Succ. J. (Los Angeles) 8: 99. 1937 syn. sec. Hernández & Gómez-Hinostrosa 2015
- ≡Neomammillaria gatesii (M.E.Jones) Y.Itô, Cactaceae: 606. 1981 syn. sec. Hunt 2016