This name is a synonym of Agrocharis melanantha Hochst..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 1701960) with original publication details: Linnaea 40: 190 1876.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:849541-1.
This name was in version 1 of The Plant List, record tro-1701960.