This name is a synonym of Bouteloua americana (L.) Scribn..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 394364) with original publication details: Syst. Nat. ed. 10 2: 879 1759.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:19971-2.
This name was in version 1 of The Plant List, record kew-394364.