Mammillaria grahamii subsp. sheldonii (Britton & Rose) D.R.Hunt
, Cactaceae Syst. Init. 20: 21 (2005).
External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:77071401-1
- Species Name
- Mammillaria grahamii Engelm., Syn. Cact. U. S. 6 (1856).
- Publication
- Cactaceae Systematics Initiatives: Bulletin of the International Cactaceae Systematics Group. England
- Collation
- 20: 21
- Date of Publication
- Nov 2005
- Family as entered in IPNI
- Cactaceae