External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:174965-2
- Publication
- Smithsonian Miscellaneous Collections. Washington, DC
- Collation
- 50(4): 529
- Date of Publication
- 20 Feb 1908
- Family as entered in IPNI
- Cactaceae