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CCDB → Angiosperms → Compositae → Symphyotrichum → Symphyotrichum × amethystinum

15 chromosome counts in Symphyotrichum × amethystinum:

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		Name	Accepted Name	Gametophytic(n)	Sporophytic(2n)	Data Source	reference
!		Aster amethystinus Nutt.	Symphyotrichum × amethystinum (Nutt.) G. L. Nesom		10	Darlington, 1955	Wetmore & D. 1939 H
!		Aster × amethystinus N. (. S. )	Symphyotrichum × amethystinum (Nutt.) G. L. Nesom		10	IPCN online	Chmielewski, J. G. 1986. Documented plant chromosome numbers 1986. 1. Miscellaneous counts in Aster (Compositae). Sida 11: 483–485.
!		Lasallea × amethystina (Nutt.) Semple & Brouillet	Symphyotrichum × amethystinum (Nutt.) G. L. Nesom		10	IPCN online	Semple, J. C. & L. Brouillet. 1980. Chromosome numbers and satellite chromosome morphology in Aster and Lasallea. Amer. J. Bot. 67(7): 1027–1039.
!		Symphyotrichum × amethystinum	Symphyotrichum × amethystinum (Nutt.) G. L. Nesom		10	eFlora
!		Symphyotrichum × amethystinum (N. ). G. L. N. (. A. E. A. novae-anglicae)	Symphyotrichum × amethystinum (Nutt.) G. L. Nesom	5II(1)	10(1)	Asteracea	Wetmore & D. 1939 Amer. J. Bot.
!		Symphyotrichum × amethystinum (Nutt.) G. L. Nesom	Symphyotrichum × amethystinum (Nutt.) G. L. Nesom		10(1)	Asteracea	Semple et al. 1992 Rhodora
!		Symphyotrichum × amethystinum (Nutt.) G. L. Nesom	Symphyotrichum × amethystinum (Nutt.) G. L. Nesom		10(1)	Asteracea	Semple ＆ B. 1980 Amer. J. Bot.
!		Symphyotrichum × amethystinum (Nutt.) G. L. Nesom	Symphyotrichum × amethystinum (Nutt.) G. L. Nesom		10(1)	Asteracea	Semple et al. 1989 Rhodora
!		Symphyotrichum × amethystinum (Nutt.) G. L. Nesom	Symphyotrichum × amethystinum (Nutt.) G. L. Nesom	5II(1)	10(1)	Asteracea	Wetmore ＆ D. 1939 Amer. J. Bot.
!		Symphyotrichum × amethystinum (Nutt.) G. L. Nesom	Symphyotrichum × amethystinum (Nutt.) G. L. Nesom		10(1)	Asteracea	Semple ＆ B. 1980 Amer. J. Bot.
!		Symphyotrichum × amethystinum (Nutt.) G. L. Nesom	Symphyotrichum × amethystinum (Nutt.) G. L. Nesom		10(1)	Asteracea	Van Faasen 1963 Michigan Botanist
!		Symphyotrichum × amethystinum (Nutt.) G. L. Nesom	Symphyotrichum × amethystinum (Nutt.) G. L. Nesom		10(1)	Asteracea	Semple ＆ C. 2004 Rhodora
!		Virgulus × amethystinus (Nutt.) Reveal & Keener	Symphyotrichum × amethystinum (Nutt.) G. L. Nesom		10	IPCN online	Semple, J. C. & J. G. Chmielewski. 1987. Chromosome number determinations in fam. Compositae, tribe Astereae. II. Additional counts. Rhodora 89: 319–325.
!		Virgulus × amethystinus (Nutt.) Reveal & Keener	Symphyotrichum × amethystinum (Nutt.) G. L. Nesom		10	IPCN online	Semple, J. C., J. G. Chmielewski & M. E. Lane. 1989. Chromosome number determinations in fam. Compositae, tribe Astereae. III. Additional counts and comments on generic limits and ancestral base numbers. Rhodora 91: 296–314.
!		Virgulus × amethystinus (Nutt.) Reveal & Keener	Symphyotrichum × amethystinum (Nutt.) G. L. Nesom		10	IPCN online	Semple, J. C., J. G. Chmielewski & C. Xiang. 1992. Chromosome number determinations in fam. Compositae, tribe Astereae. IV. Additional reports and comments on the cytogeography and status of some species of Aster and Solidago. Rhodora 94: 48–62.