⚠ Version 1.1 of The Plant List has been superseded and should no longer be used.

The new version is available at http://www.worldfloraonline.org. The new version is enhanced, using more data sources including Taxonomic Expert Networks and will be more frequently updated.

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	Date supplied	Infra. rec.
Thuja aphylla L.	Unresolved		WCSP	2012-03-23
Thuja beverleyensis Hort. ex Rehder	Unresolved		TRO	2012-04-18
Thuja cristata Carrière	Unresolved		TRO	2012-04-18
Thuja koraiensis Nakai	Accepted		WCSP	2012-03-23
Thuja occidentalis L.	Accepted		WCSP	2012-03-23
Thuja plicata Donn ex D.Don	Accepted		WCSP	2012-03-23
Thuja × plicatoides Seneta	Unresolved		WCSP	2012-03-23
Thuja standishii (Gordon) Carrière	Accepted		WCSP	2012-03-23
Thuja sutchuenensis Franch.	Accepted		WCSP	2012-03-23

Statistics

The Plant List includes 60 scientific plant names of species rank for the genus Thuja. Of these 5 are accepted species names.

The Plant List includes a further 66 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 60 species names for the genus Thuja recorded in The Plant List, are as follows:

	Status	Total
◕	Accepted	5	8.3%
◕	Synonym	51	85.0%
◕	Unplaced	0	0%
◕	Unassessed	4	6.7%

All names

The status of the 126 names (including infraspecific names) for the genus Thuja recorded in The Plant List, are as follows:

	Status	Total
◕	Accepted	5	4.0%
◕	Synonym	117	92.9%
◕	Unplaced	0	0%
◕	Unassessed	4	3.2%

Of the species names,

• 8 are recorded as invalid
• 4 are recorded as illegitimate

The confidence with which the status of the 60 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	51	0	0	56	93.3%
	Medium confidence	0	0	0	0	0	0%
	Low confidence	0	0	0	4	4	6.7%

The source of the species name records found in The Plant List for the genus Thuja is as follows: