This name is a synonym of Helictotrichon planifolium (Willk.) Holub.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 397697) with original publication details: Prodr. Fl. Hispan. 1: 69 1861.
This name was in version 1 of The Plant List, record kew-397697, and has not been changed.