This name is a synonym of Elymus schrenkianus (Fisch. & C.A.Mey.) Tzvelev.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 400091) with original publication details: Fl. Ross. 4: 346 1852.
This name was in version 1 of The Plant List, record kew-400091.