⚠ Version 1 of The Plant List has been superseded.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 Thuya gigantea in version 1.1 of The Plant List.
This name is a synonym of Thuya plicata .
The record derives from Tropicos which reports it as a synonym (record 24900519
) with original publication details: J. Acad. Nat. Sci. Philadelphia, ser. 2, 7: 52 52 1854.