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 and as an invalid name (record 448471) with original publication details: Fl. Ross. 4: 339 1852.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:425582-1.
This name was in version 1 of The Plant List, record kew-448471.