This name is a synonym of Gymnocalycium leptanthum (Speg.) Speg..
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Anales Mus. Nac. Buenos Aires III, 4: 504 1905.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:87627-2.
This name was in version 1 of The Plant List, record kew-2782166, and has not been changed.