This name is a synonym of Avenastrum pubescens var. flavescens (Gander) Podp..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 25559853) with original publication details: Syn. Mitteleur. Fl. 2: 244 1899.
This name was in version 1 of The Plant List, record tro-25559853.