This name is a synonym of Helictotrichon elongatum (Hochst. ex A.Rich.) C.E.Hubb..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 397545) with original publication details: Flora 38: 275 1855.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:391448-1.
This name was in version 1 of The Plant List, record kew-397545, and has not been changed.