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 448361) with original publication details: Trudy Bot. Muz. Imp. Akad. Nauk 12: 46 1914.
This name was in version 1 of The Plant List, record kew-448361.