External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:175296-2
- Publication
- Bulletin of the Torrey Botanical Club. New York
- Collation
- 43: 530
- Family as entered in IPNI
- Cactaceae
Type Information
- Distribution Of Types
- Texas, California, United States of America (Northern America)