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 a spelling variant (record 391975) with original publication details: W. Rev. & Misc. Mag. 1: 95 1819.
This name was in version 1 of The Plant List, record kew-391975.