This name is a synonym of Eragrostis japonica (Thunb.) Trin..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 25554394) with original publication details: Syn. Pl. Glumac. 1: 266 1854.
This name was in version 1 of The Plant List, record tro-25554394.