This name is a synonym of Avena nuda var. biaristata (Alef.) Asch. & Graebn..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 25559728) with original publication details: Landw. Fl. 322 1866.
This name was in version 1 of The Plant List, record tro-25559728, and has not been changed.