External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:969405-1
- Publication
- Calyx. Sutton under Whitestone Cliffe
- Collation
- 2(3): 104 (1992):
- Date of Publication
- 1992
- Family as entered in IPNI
- Cactaceae