This name is a synonym of Sphenopholis pensylvanica (L.) Hitchc..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 397741) with original publication details: Fl. Bor.-Amer. 1: 72 1803.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:27193-2.
This name was in version 1 of The Plant List, record kew-397741, and has not been changed.