This name is a synonym of Echinopsis chiloensis (Colla) Friedrich & G.D.Rowley.
The record derives from WCSP (in review) which reports it as a synonym with original publication details: I.O.S. Bull. 3: 94 1974.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:88360-2.