This name is a synonym of Koeleria macrantha (Ledeb.) Schult..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 387240) with original publication details: Mexic. Pl. 2: 109 1886.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:2230-2.
This name was in version 1 of The Plant List, record kew-387240.