This name is a synonym of Avena pubescens var. glabrescens (Rchb.) Hausm..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 25559856) with original publication details: Fl. Saxon. 16 1842.
This name was in version 1 of The Plant List, record tro-25559856.