Notocactus orthacanthus (Link & Otto) Vliet
, Succulenta (Netherlands) 1970: 185 (1970).
External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:170682-2
- Publication
- Succulenta; Nederlandsche Vereeniging van Liefhebbers van Cactussen en andere Vetplanten. Huizum, etc.
- Collation
- 1970: 185
- Family as entered in IPNI
- Cactaceae