External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:175466-2
- Publication
- Contributions from the United States National Herbarium. Smithsonian Institution
- Collation
- 3(7): 423
- Date of Publication
- 1 Apr 1896
- Family as entered in IPNI
- Cactaceae
Type Information
- Distribution Of Types
- Lower California, Mexico (Northern America)