External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:969704-1
- Publication
- Calyx. Sutton under Whitestone Cliffe
- Collation
- 3(1): 31 (1993):
- Date of Publication
- 1993
- Family as entered in IPNI
- Cactaceae