This name is a synonym of Eragrostis thollonii Franch..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 413163) with original publication details: Compagnie du Kasai 250 1910.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:401539-1.
This name was in version 1 of The Plant List, record kew-413163, and has not been changed.