External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:281612-2
- Publication
- Bulletin of the Torrey Botanical Club. New York
- Collation
- 19(3): 92
- Family as entered in IPNI
- Cactaceae
Type Information
- Collector Team
- G.Engelmann 1880
- Type Herbaria
- lectotype MO
- Distribution Of Types
- California (Southwestern U.S.A., Northern America)