This name is a synonym of Hyparrhenia pilgeriana C.E.Hubb..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 406287) with original publication details: Bot. Jahrb. Syst. 54: 286 1917.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:397016-1.
This name was in version 1 of The Plant List, record kew-406287, and has not been changed.