This name is a synonym of Helictotrichon filifolium (Lag.) Henrard.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 395428) with original publication details: Bot. Jahrb. Syst. 75: 329 1951.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:389929-1.
This name was in version 1 of The Plant List, record kew-395428, and has not been changed.