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CCDB → Angiosperms → Crassulaceae → Sempervivum → Sempervivum tectorum L.

10 chromosome counts in Sempervivum tectorum L.:

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		Name	Accepted Name	Gametophytic(n)	Sporophytic(2n)	Data Source	reference
!		Sempervivum tectorum L.	Sempervivum tectorum L.		72	British Isles cytology	Rutland, J.P. New Phytol. 40: 210-214 (1941)
!		Sempervivum tectorum L.	Sempervivum tectorum L.		72	flora of NW Europe	http://wbd.etibioinformatics.nl/bis/flora.php?selected=beschrijving&menuentry=soorten&id=2514
!		Sempervivum tectorum L.	Sempervivum tectorum L.		36,40,72	eFlora
!		Sempervivum tectorum L.	Sempervivum tectorum L.		72	Darlington, 1955	Rutland 1941
		Sempervivum tectorum L.	Sempervivum tectorum L.		36	CromoCat 2015	Castroviejo & al. (2003). Flora Iberica (vol. I-VIII, X, XIV) Publicaciones del CSIC Madrid
		Sempervivum tectorum L.	Sempervivum tectorum L.		36	CromoCat 2015	Zésiger, F. (1961). Recherches cytotaxinomiques sur les Joubarbes (genres Sempervivum L. et Jovibarba Opiz.). Ber. Schweiz. Bot. Ges. (Bull. Soc. Bot. Suisse) 71: 113-117.
		Sempervivum tectorum L.	Sempervivum tectorum L.		72	CromoCat 2015	Rutland, J. P. (1941). The Merton Catalogue. A list of chromosome numbers of British plants. New Phytol. 40(3): 210-214.
		Sempervivum tectorum L.	Sempervivum tectorum L.		72	CromoCat 2015	Uhl, C. H. (1961). The chromosomes of the Sempervivoideae (Crassulaceae). Amer. J. Bot. 48(2): 114-123.
		Sempervivum tectorum L.	Sempervivum tectorum L.		72	CromoCat 2015	Zésiger, F. (1961). Recherches cytotaxinomiques sur les Joubarbes (genres Sempervivum L. et Jovibarba Opiz.). Ber. Schweiz. Bot. Ges. (Bull. Soc. Bot. Suisse) 71: 113-117.
		Sempervivum tectorum L.	Sempervivum tectorum L.		74	CromoCat 2015	Uhl, C. H. (1961). The chromosomes of the Sempervivoideae (Crassulaceae). Amer. J. Bot. 48(2): 114-123.