Gymnocactus valdezianus var. albiflorus (Pazout) Backeb.
, Kakteenlexikon 163 (1966).
External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:115342-2
- Publication
- Kakteenlexikon, Das
- Collation
- 163
- Family as entered in IPNI
- Cactaceae