This name is a synonym of Trillium erectum L..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 290626) with original publication details: Fl. Bor.-Amer. 1: 215 1803.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:328449-2.
This name was in version 1 of The Plant List, record kew-290626.