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CCDB → Angiosperms → Orchidaceae → Cypripedium → Cypripedium calceolus L.

31 chromosome counts in Cypripedium calceolus L.:

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		Name	Accepted Name	Gametophytic(n)	Sporophytic(2n)	Data Source	reference
!		Cypripedium calceolus L.	Cypripedium calceolus L.		20	CHROBASE	DEL PRETE C. - 1979 (1978). Contributi alla conoscenza delle Orchidaceae d'Italia. VI. Tavole cromosomiche delle "Orchidaceae" italiane con alcune considerazioni citosistematiche sui generi "Ophrys", "Orchis" e "Serapias".. Inform. Bot. Ital. , 10(3): 379-389.
!		Cypripedium calceolus L.	Cypripedium calceolus L.		20	CHROBASE	DEL PRETE C., GARBARI F., GIORDANI A. - 1980. Numeri cromosomici per la flora italiana:690-695.. Inform. Bot. Ital. , 12(2): 117-120.
!		Cypripedium calceolus L.	Cypripedium calceolus L.		22	CHROBASE	FRANCINI E. - 1931. Ricerche embriologiche e cariologiche sul genere "Cypripedium" s.l.. N. Giorn. Bot. Ital., n.s. , 38(1): 155-212.
		Cypripedium calceolus L.	Cypripedium calceolus L.		20	Slovakia Database	Májovský J. et al., 1976: Index of chromosome numbers of Slovakian flora (Part 5). - Acta Fac. Rerum Nat. Univ. Comen., Bot. 25: 1-18.
		Cypripedium calceolus L.	Cypripedium calceolus L.		20	IAPT/IOPB
		Cypripedium calceolus L.	Cypripedium calceolus L.		20	IAPT/IOPB
!		Cypripedium calceolus L.	Cypripedium calceolus L.		20	flora of NW Europe	http://wbd.etibioinformatics.nl/bis/flora.php?selected=beschrijving&menuentry=soorten&id=4902
!		Cypripedium calceolus L.	Cypripedium calceolus L.		20	Flora Europaea	Skalinska et al.,
		Cypripedium calceolus L.	Cypripedium calceolus L.		20	Poland Database	Skali?ska M., Banach-Pogan E., Wcis?o H. et al. 1957. Further studies in chromosome numbers of Polish Angiosperms. Acta Soc. Bot. Pol. 26, 215-246.
		Cypripedium calceolus L.	Cypripedium calceolus L.		22	Poland Database	?ukowski and Anders (unpubl.)
		Cypripedium calceolus L.	Cypripedium calceolus L.		20	IPCN online	Averyanov, L. V., E. L. Averyanova & A. N. Lavrenko. 1982a. Karyosystematic study of orchids (Orchidaceae) on the territory of the Komi ASSR. Bot. Zhurn. 67 (11): 1491–1499. (In Russian).
		Cypripedium calceolus L.	Cypripedium calceolus L.		20	IPCN online	Semerenko, L. V. 1989. Chromosome numbers in some members of the families Asteraceae, Fabaceae, Orchidaceae and Poaceae from the Berezinsky Biosphere Reservation (Byelorussia) flora. Bot. Žhurn. (Moscow & Leningrad) 74: 1671–1673.
		Cypripedium calceolus L.	Cypripedium calceolus L.		20	IPCN online	Malakhova, L. A. 1990. Kariologocheskij analiz prirodnykh populjacij redkich i ischezajushchikh rastenij na juge Tomskoj Oblasti. Bjulleten' Glavnogo Botanic|5eskogo Sada 155: 60–66.
		Cypripedium calceolus L.	Cypripedium calceolus L.		20	IPCN online	Lavrenko, A. N., N. P. Serditov & Z. G. Ulle. 1991. Chromosome numbers in some species of vascular plants from the Pechoro-Ilychsky Reservation (Komi ASSR). Bot. Žhurn. (Moscow & Leningrad) 76: 473–476.
		Cypripedium calceolus L.	Cypripedium calceolus L.		20	IPCN online	Malakhova, L. A. & G. A. Markova. 1994. Chromosome numbers in the flowering plants of Tomsk region. Monocotyledones. Bot. Žhurn. (Moscow & Leningrad) 79(7): 134–135.
		Cypripedium calceolus L.	Cypripedium calceolus L.		20	IPCN online	DEL PRETE, C. 1978. Contributi alla conoscenza della Orchidaceae d'ltalia. Vl. Tavole cromosomiche delle Orchidaceae italiane con alcune considerazioni citosistematiche sui generi Ophrys, Orchis, e Serapias. Inform. Bot. Ital. 10: 379–389.
		Cypripedium calceolus L.	Cypripedium calceolus L.		20	IPCN online	DEL PRETE, C., F. Garbari & A. Giordani. 1980. Numeri cromosomicl per la Flora Italiana: 690-695. Inform. Bot. Ital. 12: 117–120.
		Cypripedium calceolus L.	Cypripedium calceolus L.		20	IPCN online	Engelskjon, T. 1979. Chromosome numbers in vascular plants from Norway, including Svalbard. Opera Bot. 52: 1–38.
		Cypripedium calceolus L.	Cypripedium calceolus L.		20	IPCN online	Averyanov, L. V. 1979. Chromosome numbers of some species of Orchidaceae from the northwestern part of the USSR. Bot. Zhurn. 64 (6): 863–877.
		Cypripedium calceolus L.	Cypripedium calceolus L.		20	IPCN66	Sokolovskaya 1966
!		Cypripedium calceolus L.	Cypripedium calceolus L.		20	eFlora
!		Cypripedium calceolus L.	Cypripedium calceolus L.		22	Darlington, 1955	Francini 1931
		Cypripedium calceolus L.	Cypripedium calceolus L.		20	CromoCat 2015	Averyanov, L. V. (1979). Chromosome numbers of some species of Orchidaceae family from the North-Western part of U.S.S.R. Bot. Žurn. 64: 863-877.
		Cypripedium calceolus L.	Cypripedium calceolus L.		20	CromoCat 2015	Averyanov, L. V., Averyanova, E. L. & Lavrenko, A. N. (1982b). Karyosystematic study of orchids (Orchidaceae) on the territory of the Komi ASSR. Bot. Žurn. 67: 1491-1499.
		Cypripedium calceolus L.	Cypripedium calceolus L.		20	CromoCat 2015	Del Prete, C. (1978). Contributi alla conoscenza delle "Orchidaceae" d'Italia. VI. Tavole cromosomiche delle "Orchidaceae" italiane con alcune considerazioni citosistematiche sui generi "Ophrys", "Orchis" e "Serapias". Inf. Bot. Ital. 10: 379-389.
		Cypripedium calceolus L.	Cypripedium calceolus L.		20	CromoCat 2015	Del Prete, C. , Garbari, F. & Giordani, A. (1980). Numeri cromosomicl per la Flora Italiana: 690-695. Informatore Botanico Italiano 12: 117-120.
		Cypripedium calceolus L.	Cypripedium calceolus L.		20	CromoCat 2015	Engelskjon, T. (1979). Chromosome numbers in vascular plants from Norway, including Svalbard. Opera Bot. 52: 1-38.
		Cypripedium calceolus L.	Cypripedium calceolus L.		20	CromoCat 2015	Lavrenko, A. N., Serditov, N. P. & Ulle, L. G. (1991). Chromosome numbers in some species of vascular plants from the Pechoro-Ilychsky Reservation (Komi ASSR) Bot. Žurn. 76: 473-476.
		Cypripedium calceolus L.	Cypripedium calceolus L.		20	CromoCat 2015	Malakhova, L. A. & Markova, G. A. (1994). Chromosome numbers in the flowering plants of Tomsk region. Monocotyledones Bot. Žurn. 79(7): 134-135
		Cypripedium calceolus L.	Cypripedium calceolus L.		20	CromoCat 2015	Malakhova, L. A. (1990). Kariologocheskij analiz prirodnykh populjacij redkich i ischezajushchikh restenij na juge Tomskoj Oblasti. Bull. Glavn. Bot. Sada 155: 60-66.
		Cypripedium calceolus L.	Cypripedium calceolus L.		20	CromoCat 2015	Semerenko, L. V. (1989). Chisla khromosom nekotorykh pretstavitelei semeistv Asteraceae, Fabaceae, Orchidaceae, Poaceae flory Berezinskogo Biosfernogo Zapovednika (BSSR). Bot. Žurn. 74(11): 1671-1673.