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 419554) with original publication details: Bot. Jahrb. Syst. 40: 109 1907.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:405382-1.
This name was in version 1 of The Plant List, record kew-419554.