⚠ Version 1 of The Plant List has been superseded.

You should refer instead to the current version of The Plant List.

The genus Thuja is in the family Cupressaceae in the major group Gymnosperms (Conifers, cycads and allies).

Statistics are at the end of the page.

Species in Thuja

See "Status", "Confidence level", "Source" for definitions.

Name	Status	Confi­dence level	Source
Thuja koraiensis Nakai	Accepted		WCSP
Thuja occidentalis L.	Accepted		WCSP
Thuja plicata Donn ex D.Don	Accepted		WCSP
Thuja standishii (Gordon) Carrière	Accepted		WCSP
Thuja sutchuenensis Franch.	Accepted		WCSP

Statistics

The Plant List includes 100 scientific plant names of species rank for the genus Thuja. Of these 5 are accepted species names.

The Plant List includes a further 14 scientific plant names of infraspecific rank for the genus Thuja. We do not intend The Plant List to be complete for names of infraspecific rank. These are primarily included because names of species rank are synonyms of accepted infraspecific names.

Species names

The status of the 100 species names for the genus Thuja recorded in The Plant List, are as follows:

	Status	Total
◕	Accepted	5	5.0%
◕	Synonym	92	92.0%
◕	Unplaced	1	1.0%
◕	Unassessed	2	2.0%

All names

The status of the 114 names (including infraspecific names) for the genus Thuja recorded in The Plant List, are as follows:

	Status	Total
◕	Accepted	5	4.4%
◕	Synonym	106	93.0%
◕	Unplaced	1	0.9%
◕	Unassessed	2	1.8%

Of these names,

• 16 are recorded as invalid
• 5 are recorded as illegitimate

The confidence with which the status of the 100 species names recorded in The Plant List for the genus Thuja, are assigned as follows:

	Confidence level	Accepted	Synonym	Unplaced	Unassessed	Total
	High confidence	5	88	0	0	93	93.0%
	Medium confidence	0	0	0	0	0	0%
	Low confidence	0	4	1	2	7	7.0%

The source of the species name record found in The Plant List for the genus Thuja, are as follows: