This name is a synonym of Elymus hispidus (Opiz) Melderis.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 446496) with original publication details: Amer. J. Bot. 72: 772 1985.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:1003651-1.
This name was in version 1 of The Plant List, record kew-446496.