This name is a synonym of Helictotrichon argaeum (Boiss.) Parsa.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 397329) with original publication details: Fl. Orient. 5: 546 1884.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:391319-1.
This name was in version 1 of The Plant List, record kew-397329, and has not been changed.