This name is a synonym of Echidnopsis planiflora P.R.O.Bally.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Kakteen And. Sukk. 55: 158 2004.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:60433577-2.
This name was in version 1 of The Plant List, record kew-2781488, and has not been changed.