This name is a synonym of Parodia subterranea F. Ritter.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50138557) with original publication details: Stachelpost 9(44): 30 1973.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:183529-2.
This name was in version 1 of The Plant List, record tro-50138557, and has not been changed.