External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:87875-2
- Publication
- Bulletin of the Torrey Botanical Club. New York
- Collation
- 68: 417, fig. 7
- Family as entered in IPNI
- Cactaceae
Type Information
- Distribution Of Types
- Arizona (Southwestern U.S.A., Northern America)