Ferocactus townsendianus var. santa-maria (Britton & Rose) G.E.Linds.
, Cact. Succ. J. (Los Angeles) 27: 170 (1955).
External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:103688-2
- Publication
- Cactus and Succulent Journal. [Cactus and Succulent Society of America]
- Collation
- 27: 170
- Family as entered in IPNI
- Cactaceae