External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:39542-2
- Publication
- Contributions from the United States National Herbarium. Smithsonian Institution
- Collation
- 3(2): 117
- Date of Publication
- 10 Jun 1894
- Family as entered in IPNI
- Cactaceae
Type Information
- Distribution Of Types
- Mexico (Northern America)