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 397552) with original publication details: Suppl. Prodr. Fl. Hispan. 18 1893.
This name was in version 1 of The Plant List, record kew-397552, and has not been changed.