This name is a synonym of Setaria barbata (Lam.) Kunth.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 404225) with original publication details: Bull. Bur. Pl. Industr. U.S.D.A. 282: 15 1913.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:395517-1.
This name was in version 1 of The Plant List, record kew-404225, and has not been changed.