This name is a synonym of Avena barbata Pott ex Link.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 25560132) with original publication details: Repert. Spec. Nov. Regni Veg. 13: 52 1913.
This name record (from Tropicos) was not included in version 1 of The Plant List. It is possible the same name was included from a different data source, to check this you can search for Avena sterilis in version 1 of The Plant List.