Ferocactus cylindraceus var. greenwoodiae (Glass) N.P.Taylor
, Bradleya 2: 27 (1984).
External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:277140-2
- Publication
- Bradleya; Yearbook of the British Cactus and Succulent Society. Botley
- Collation
- 2: 27
- Family as entered in IPNI
- Cactaceae