This name is a synonym of Hyparrhenia gazensis (Rendle) Stapf.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 406176) with original publication details: J. Linn. Soc., Bot. 40: 226 1911.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:396930-1.
This name was in version 1 of The Plant List, record kew-406176, and has not been changed.