⚠ Version 1 of The Plant List has been superseded.
This name record (from Tropicos) is not included in version 1.1 of The Plant List. It is possible the same name is included from a different data source, to check this you can search for Trillium grandiflorum in version 1.1 of The Plant List.
This name is a synonym of Trillium grandiflorum .
The record derives from Tropicos which reports it as a synonym (record 18403869
) with original publication details: Contr. Lab. Bot. Univ. Montréal 14: 30 30 1929.