External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:174915-2
- Publication
- Madrono; Journal of the California Botanical Society
- Collation
- 7: 71, tab. 4, fig. C
- Family as entered in IPNI
- Cactaceae
Type Information
- Distribution Of Types
- Nevada (Southwestern U.S.A., Northern America)