This name is a synonym of Echinopsis pachanoi (Britton & Rose) Friedrich & G.D.Rowley.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 5101738) with original publication details: Cactaceae 2: 134–135, f. 196 1920.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:257116-2.
This name was in version 1 of The Plant List, record tro-5101738, and has not been changed.