This name is a synonym of Gymnocalycium ragonesei A.Cast..
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Natl. Cact. Succ. J. 30: 49 1975.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:115499-2.
This name was in version 1 of The Plant List, record kew-2835851, and has not been changed.