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 392166) with original publication details: Sudania 1: 77 1911.
This name was in version 1 of The Plant List, record kew-392166, and has not been changed.