Mammillaria grahamii ssp. sheldoniiSubspecies
Synonyms
- Mammillaria guirocobensis
- Mammillaria inaiae
- Mammillaria gueldemanniana
- Mammillaria sheldonii
- Mammillaria swinglei
- Mammillaria marnieriana
- Mammillaria alamensis
- Mammillaria milleri var. sheldonii