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CCDB → Angiosperms → Betulaceae → Betula → Betula nana L.

19 chromosome counts in Betula nana L.:

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		Name	Accepted Name	Gametophytic(n)	Sporophytic(2n)	Data Source	reference
!		Betula nana L.	Betula nana L.		28	British Isles cytology	Kenworthy, J.B., Aston, D., Bucknall, S.A. Trans. & Proc. Bot. Soc. Edinburgh 41: 517-539 (1972)
!		Betula nana L.	Betula nana L.		28	flora of NW Europe	http://wbd.etibioinformatics.nl/bis/flora.php?selected=beschrijving&menuentry=soorten&id=1769
		Betula nana L.	Betula nana L.		28	IPCN online	Krogulevich, R. E. 1976. Rol poliploidii v genesise flory Putorana. In: L. I. Malyshev, ed. 1976 Flora Putorana: Materali k Poznaniiu Osobennostei Sostava i Genezisia Gornykh Subarkticheskikh Flor Sibir. Novosibirsk. Nauka, Novosibirsk
		Betula nana L.	Betula nana L.		28	IPCN online	Anamthawat-Jonsson, K. & T. Tomasson. 1990. Cytogenetics of hybrid introgression in Icelandic birch. Hereditas (Lund) 112: 65–70.
		Betula nana L.	Betula nana L.		28	IPCN online	Dobea, C., B. Hahn & W. Morawetz. 1997. Chromosomenzahlen zur Gefässpflanzen-Flora Österreichs. Linzer Biol. Beitr. 29(1): 5–43.
		Betula nana L.	Betula nana L.		28	IPCN online	Engelskjon, T. 1979. Chromosome numbers in vascular plants from Norway, including Svalbard. Opera Bot. 52: 1–38.
!		Betula nana subsp. nana	Betula nana L.		28	IPCN72	KENWORTHY, J.B., D. ASHTON, & S.A. BUCKNALL. 1972. A study of hybrids between Betula pubescens Ehrh. and Betula ~ L. from Sutherland - an integrated approach. Trans. Bot. Soc. Edinburgh 41: 517-539.
!		Betula nana subsp. nana	Betula nana L.		37-42	IPCN72	KENWORTHY, J.B., D. ASHTON, & S.A. BUCKNALL. 1972. A study of hybrids between Betula pubescens Ehrh. and Betula ~ L. from Sutherland - an integrated approach. Trans. Bot. Soc. Edinburgh 41: 517-539.
		Betula nana L.	Betula nana L.		28	IPCN67-71	KNABEN, G., & T. ENGELSKJON. 1967. Chromosome numbers of Scandinavian arctic-alpine plant species. II. Act. Boreal. A. Sci. No. 21: 1-57.
!		Betula nana L.	Betula nana L.		42	IPCN67-71	KNABEN, G., & T. ENGELSKJON. 1967. Chromosome numbers of Scandinavian arctic-alpine plant species. II. Act. Boreal. A. Sci. No. 21: 1-57.
!		Betula nana subsp. nana	Betula nana L.		28	Love, 1948	Flovik 1940. L. & L. 1944 b.
		Betula nana L.	Betula nana L.		28	IPCN73-74	ZHUKOVA, P.G., V.V. PETROVSKY, & T.N. PLIEVA. 1973. The chromosome numbers and taxonomy of some plant species from Siberia and Far East. (in Russian) Bot. zurn. (Moscow & Leningrad) 58: 1331-1342.
		Betula nana subsp. nana	Betula nana L.		28	eFlora
!		Betula nana L.	Betula nana L.		28	Darlington, 1955	Flovik 1940
!		Betula nana L.	Betula nana L.		28	C-values database	Anamthawat-Jónsson K, Thórsson ÆT, Temsch EM, Greilhuber J. 2010. Icelandic birch polyploids — the case of a perfect fit in genome size. Journal of Botany 2010: Article ID 347254, 9 pages.
!		Betula nana subsp. nana	Betula nana L.		42	C-values database	Anamthawat-Jónsson K, Thórsson ÆT, Temsch EM, Greilhuber J. 2010. Icelandic birch polyploids — the case of a perfect fit in genome size. Journal of Botany 2010: Article ID 347254, 9 pages.
!		Betula nana L.	Betula nana L.		2n = 28	Austria_checklist	Dobe?, Ch., Hahn, B., & Morawetz, W. 1997. Chromosomenzahlen zur Gef??pflanzen-Flora ?sterreichs. Linzer Biol.Beitr. 29[1], 5-43.
		Betula nana L.	Betula nana L.		28	Cave1956	Love & Love b
		Betula nana L.	Betula nana L.		28	Cave1958	Jorgensen et al. 1958