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 illegitimate name (record 443199) with original publication details: Fl. S.E. U.S. 66 1903.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:240820-2.
This name was in version 1 of The Plant List, record kew-443199.