This name is a synonym of Helictotrichon sempervirens (Vill.) Pilg..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 397921) with original publication details: Prosp. Hist. Pl. Dauphiné 17 1779.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:391747-1.
This name was in version 1 of The Plant List, record kew-397921, and has not been changed.