This name is a synonym of Guilleminea densa (Willd. ex Schult.) Moq..
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Fl. S.E. U.S. 394 1903.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:36295-2.
This name was in version 1 of The Plant List, record kew-2683150.