External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:52861-2
- Publication
- West American Scientist. [Society of Natural History]. San Diego
- Collation
- 13(4): 63
- Date of Publication
- Nov 1902
- Family as entered in IPNI
- Cactaceae