This name is a synonym of Sorghastrum nutans (L.) Nash.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym and as an invalid name (record 405110) with original publication details: Proc. Amer. Acad. Arts 22: 460 1887.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:396157-1.
This name was in version 1 of The Plant List, record kew-405110.