This name is a synonym of Hyparrhenia newtonii (Hack.) Stapf.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 25526119) with original publication details: Repert. Spec. Nov. Regni Veg. Beih. 40(1): 375 1936.
This name was in version 1 of The Plant List, record tro-25526119.