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 397853) with original publication details: Anales Jard. Bot. Madrid 41: 117 1984.
This name was in version 1 of The Plant List, record kew-397853, and has not been changed.