Mammillaria backebergiana Buchenau subsp. backebergiana in Natl. Cact. Succ. J. 21: 47. 1966 sec. Hunt 2016
- =Mammillaria fertilis Hildm. ex K. Schum., Gesamtbeschr. Kakt.: 530. 1898 syn. sec. Guzmán & al. 2003
- =Neomammillaria fertilis (Hildm.) Britton & Rose, Cactaceae (Britton & Rose) 4: 131. 1923 syn. sec. Guzmán & al. 2003