This name is a synonym of Digitaria argyrotricha (Andersson) Chiov..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 25524717) with original publication details: Naturw. Reise Mossambique 548 1864.
This name was in version 1 of The Plant List, record tro-25524717, and has not been changed.