This name is a synonym of Hyparrhenia nyassae (Rendle) Stapf.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 406130) with original publication details: J. Bot. (Morot) 22: 213 1909.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:396893-1.
This name was in version 1 of The Plant List, record kew-406130, and has not been changed.