This name is a synonym of Bouteloua juncea (P.Beauv.) Hitchc..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 406388) with original publication details: Ann. Sci. Nat. (Paris) 5: 303 1825.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:397090-1.
This name was in version 1 of The Plant List, record kew-406388, and has not been changed.