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 (record 405054) with original publication details: J. Linn. Soc., Bot. 19: 78 1881.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:57840-2.
This name was in version 1 of The Plant List, record kew-405054.