This name is a synonym of Elymus reflexiaristatus (Nevski) Melderis.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 448703) with original publication details: Linnaea 12: 467 1838.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:425712-1.
This name was in version 1 of The Plant List, record kew-448703.