This name is a synonym of Setaria scheelei (Steud.) Hitchc..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym and as an invalid name (record 391397) with original publication details: Linnaea 22: 340 1849.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:387089-1.
This name was in version 1 of The Plant List, record kew-391397, and has not been changed.