This name is a synonym of Andropogon hallii Hack..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 393041) with original publication details: Man. Fl. N. States 70 1901.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:12986-2.
This name was in version 1 of The Plant List, record kew-393041.