This name is a synonym of Helictotrichon longum (Stapf) Schweick..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 397649) with original publication details: Fl. Cap. 7: 473 1899.
This name was in version 1 of The Plant List, record kew-397649, and has not been changed.