Mammillaria bicolor var. longispina Salm-Dyck
, Cact. Hort. Dyck. (1844). 6 (1845).
External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:150663-2
- Publication
- Cacteae in Horto Dyckensi Cultae. Anno 1844
- Collation
- 6
- Family as entered in IPNI
- Cactaceae