This name is a synonym of Echinopsis obrepanda subsp. calorubra (Cárdenas) G.Navarro.
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. 12: 62 1957.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:88347-2.
This name was in version 1 of The Plant List, record kew-2783323, and has not been changed.