This name is a synonym of Helictotrichon setaceum (Vill.) Henrard.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 25551865) with original publication details: Prosp. Hist. Pl. Dauphine 16 1779.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:391761-1.
This name was in version 1 of The Plant List, record tro-25551865, and has not been changed.