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CCDB → Angiosperms → Betulaceae → Betula → Betula nigra L.

3 chromosome counts in Betula nigra L.:

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		Name	Accepted Name	Gametophytic(n)	Sporophytic(2n)	Data Source	reference
!		Betula nigra L.	Betula nigra L.		28, 56	IPCN72	VALANNE, T. 1972. Colchicine effects and colchicine-induced polyploidy in Betula. Ann. Acad. Sci. Fenn. Ser. A. 191: 1-28.
!		Betula nigra L.	Betula nigra L.		28	eFlora
!		Betula nigra L.	Betula nigra L.		28	Darlington, 1955