⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record kew-2782032, and has not been changed.
This name is a synonym of Gymnocalycium hyptiacanthum subsp. uruguayense (Arechav.) Mereg..
The record derives from WCSP (in review) which reports it as a synonym with original publication details: Anales Mus. Nac. Montevideo 5: 220 1905.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:87529-2.