This name is a synonym of Helictotrichon requienii (Mutel) Henrard.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 397805) with original publication details: Candollea 4: 446 1931.
This name was in version 1 of The Plant List, record kew-397805, and has not been changed.