This name is a synonym of Elymus nodosus subsp. corsicus (Hack.) Melderis.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 411811) with original publication details: Folia Geobot. Phytotax. 12: 426 1977.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:400526-1.
This name was in version 1 of The Plant List, record kew-411811.