Gymnocalycium hamatum F.Ritter
, Kakteen Südamerika 2: 663 (-664), fig (1980).
External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:115395-2
- Publication
- Kakteen in Sudamerika: Ergebnisse Meiner 20-jährigen Feldforschung
- Collation
- 2: 663 (-664), fig
- Family as entered in IPNI
- Cactaceae
Type Information
- Type Herbaria
- holotype U
- Distribution Of Types
- Bolivia (Western South America, Southern America)