This name is a synonym of Hyparrhenia collina (Pilg.) Stapf.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 406271) with original publication details: Bull. Jard. Bot. État 6: 20 1919.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:397008-1.
This name was in version 1 of The Plant List, record kew-406271, and has not been changed.