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CCDB → Angiosperms → Boraginaceae → Symphytum → Symphytum asperum Lepech.

19 chromosome counts in Symphytum asperum Lepech.:

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		Name	Accepted Name	Gametophytic(n)	Sporophytic(2n)	Data Source	reference
!		Symphytum asperum Lepech.	Symphytum asperum Lepech.		32	flora of NW Europe	http://wbd.etibioinformatics.nl/bis/flora.php?selected=beschrijving&menuentry=soorten&id=3417
!		Symphytum asperum Lepech.	Symphytum asperum Lepech.		32	IPCN online	Gagnidze, R. I., T. N. Gviniaschvili, M. G. Pataraia & L. D. Dzindzolia. 1985. Chromosome numbers in some high elevation species from the Big Caucasus. Bot. Zhurn. SSSR 70(12): 1698–1699. (In Russian).
!		Symphytum asperum Lepech.	Symphytum asperum Lepech.		45	IPCN online	SHIRATO, K., T. Shintani, G. Nakanishi & A. Kamizy;afo. 1985. Chromosome numbers in genus Symphytum. Chromosome Inf. Serv. 38: 21–23.
!		Symphytum asperum Lepech.	Symphytum asperum Lepech.		32	IPCN online	Huizing, H. J. 1985. Phytochemistry, systematics and biogenesis of pyrrolizidine alkaloids of Symphytum taxa. Thesis, Meppel. ý.
!		Symphytum asperum Lepech.	Symphytum asperum Lepech.		32	IPCN online	PERRING, F. H. 1975. Network research, Symphytum survey. Watsonia 10: 296–297.
!		Symphytum asperum Lepech.	Symphytum asperum Lepech.		32	IPCN online	Gadella, T. W. J. & E. Kliphuis. 1975a. Cytotaxonomic studies in the genus Symphytum VII. Some hybrids between S. asperum Lepech. and S. officinale L. in Denmark. Proc. Kon. Ned. Akad. Wetensch., C 78: 182–188.
!		Symphytum asperum Lepech.	Symphytum asperum Lepech.		32	IPCN online	Gadella, T. W. J. & E. Kliphuis. 1978. Cytotaxonomic studies in the genus Symphyrum. VIII. Chromosome numbers and classification of ten European species. Proc. Kon. Ned. Akad. Wetensch., C 81: 162–172.
		Symphytum asperum Lepech.	Symphytum asperum Lepech.		32	IPCN72	GVINIASHVILI, TS. N. 1972. Some data on the karyology of Caucasic species of Symphytum L. with respect to their taxonomy. (In Russian). Bot. Zurn. 57: 1120-1126.
		Symphytum asperum Lepech.	Symphytum asperum Lepech.		32	IPCN72	BASLER, A. 1972. Cytotaxonomische Untersuchungen an der Boraginaceen-Gattung Symphytum L. Bot. Jahrb. 92: 508-553.
		Symphytum asperum Lepech.	Symphytum asperum Lepech.		32	IPCN67-71	GADELLA, T.W.J., & E. KLIPHUIS. 1969. Cytotaxonomic studies in the genus symphytum II. Crossing experiments between symphytum officinal L. and symphytum asperum Lepech. Acta Bot. Neerl. 18: 544-549.
!		Symphytum asperum Lepech.	Symphytum asperum Lepech.		32	IPCN67-71	GADELLA, T.W.J., & E. KLIPHUIS. 1971. Cytotaxonomic studies in the genus Symphytum III. Some Symphytum hybrids in Belgium and the Netherlands. Biol. Jaarboek Dodonaea (Gent) 39: 97-107.
		Symphytum asperum Lepech.	Symphytum asperum Lepech.		32	IPCN73-74	GADELLA, T.W.J., E. KLIPHUIS, & F.H. PERRING. 1974. Cytotaxonomic studies in the genus Symphytum. VI. some notes on Symphytum in Britai Acta Bot. Neerl. 23: 433 437.
		Symphytum asperum Lepech.	Symphytum asperum Lepech.		32	IPCN73-74	PERRING, F.H. 1974. Symphytum survey. Watsonia 10: 296-297.
		Symphytum asperum Lepech.	Symphytum asperum Lepech.		32	Kumar, 1987	Gadella, T.W.J. & Kliphuis, E. 1969, 197lc, 1973, 1975b; Gadella, T.W.J. et al. 1974; Basler, A. 1972; Gviniash- vili, TS. N. 1972
		Symphytum asperum Lepech.	Symphytum asperum Lepech.		40	Kumar, 1987	Britton, D.M. 1951
		Symphytum asperum Lepech.	Symphytum asperum Lepech.		40	Fedorov, 1974	Britton 1951
!		Symphytum asperum Lepech.	Symphytum asperum Lepech.		40	Darlington, 1955	Britton 1951
		Symphytum asperum Lepech.	Symphytum asperum Lepech.		32	IAPT/IOPB	IAPT/IOPB Chromosome Data 19
		Symphytum asperum Lepech.	Symphytum asperum Lepech.		32	IAPT/IOPB	IAPT/IOPB Chromosome Data 19