This name is a synonym of Eragrostis purpurascens (Spreng.) Roem. & Schult..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 412827) with original publication details: Mant. 3: 617 1827.
This name was in version 1 of The Plant List, record kew-412827.