External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:129694-1
- Publication
- Botanical Magazine; or, Flower-Garden Displayed ... London
- Collation
- 55: t. 2820
- Family as entered in IPNI
- Cactaceae
Nomenclatural Notes
: erroneous record
Remarks
Hooker treated C. alatus; he did not mention C. speciosus