This name is a synonym of Bromus rigidus Roth.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 400926) with original publication details: Edinburgh J. Bot. 50: 9 1993.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:972447-1.
This name was in version 1 of The Plant List, record kew-400926.