This name is a synonym of Agropyron fragile (Roth) P.Candargy.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 448425) with original publication details: Enum. Hort. Berol. Alt. 1: 97 1821.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:425548-1.
This name was in version 1 of The Plant List, record kew-448425.