This name is a synonym of Leymus mollis (Trin.) Pilg..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 411031) with original publication details: Bull. Soc. Imp. Naturalistes Moscou 29(1): 64 1856.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:400213-1.
This name was in version 1 of The Plant List, record kew-411031.