⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record kew-292985, with some changes.

Trillium cernuum f. billingtonii Farw. is a synonym of Trillium cernuum L.

This name is a synonym of Trillium cernuum L..

The record derives from WCSP which reports it as a synonym (record 292985) with original publication details: Rep. (Annual) Michigan Acad. Sci. 21: 364 1920.

Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:287496-2.