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CCDB → Gymnosperms → Cupressaceae → Thuja → Thuja occidentalis L.

6 chromosome counts in Thuja occidentalis L.:

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		Name	Accepted Name	Gametophytic(n)	Sporophytic(2n)	Data Source	reference
		Chamaecyparis boursieri Carrière	Thuja occidentalis L.		22	IPCN online
		Thuja occidentalis L.	Thuja occidentalis L.		22	IPCN online	Li, L. c., Y. q. Liu, Y. q. Wang & G. Liu. 1996. Studies on the karyotypes of three species and the taxonomy of Thujoideae (Cupressaceae). Acta Bot. Yunnan. 18(4): 439–444.
!		Thuja occidentalis L.	Thuja occidentalis L.		22	IPCN online	Mehra, P. N. 1988. Indian Conifers, Gnetophytes and Phylogeny of Gymnosperms.
!		Thuja occidentalis L.	Thuja occidentalis L.		22	eFlora
!		Thuja occidentalis L.	Thuja occidentalis L.		22	Darlington, 1955	Sax & S. 1933
!		Thuja occidentalis var. compacta Carrière	Thuja occidentalis L.		22	Cave1956	Mehra & Khoshoo a