External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:1004911-1
- Publication
- Calyx. Sutton under Whitestone Cliffe
- Collation
- 6(1): 1 (1998):
- Date of Publication
- 1998
- Family as entered in IPNI
- Cactaceae