Mammillaria heyderi subsp. gaumeri (Britton & Rose) D.R. Hunt, Mammillaria Postscripts 6: 10. 1997 sec. Hunt 2016
- =Neomammillaria gaumeri Britton & Rose, Cactaceae (Britton & Rose) 4: 72. 1923 syn. sec. ???
- =Mammillaria gaumeri (Britton & Rose) Orcutt, Cactography 7. 1926 syn. sec. Hunt 2016