This name is a synonym of Gymnocalycium calochlorum (Boed.) Y.Itô.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Monatsschr. Deutsch. Kakteen-Ges. 4: 260 1932.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:87230-2.
This name was in version 1 of The Plant List, record kew-2781627, and has not been changed.