This name is a synonym of Hyparrhenia variabilis Stapf.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 419703) with original publication details: Fl. Agrost. Congo Belge 1: 181 1929.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:405471-1.
This name was in version 1 of The Plant List, record kew-419703, and has not been changed.