This name is a synonym of Elymus angulatus J.Presl.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 411166) with original publication details: Fl. Chil. 6: 467 1854.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:400263-1.
This name was in version 1 of The Plant List, record kew-411166.