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CCDB → Angiosperms → Compositae → Helenium → Helenium amarum

14 chromosome counts in Helenium amarum:

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		Name	Accepted Name	Gametophytic(n)	Sporophytic(2n)	Data Source	reference
!		Helenium amarum	Helenium amarum (Raf.) H. Rock	15(1)		Asteracea	Bierner 1989 Sida (= J. Bot. Res. Inst. Texas)
!		Helenium amarum	Helenium amarum (Raf.) H. Rock		30	eFlora
		Helenium amarum (Raf.) H. Rock	Helenium amarum (Raf.) H. Rock	15(1)		Asteracea	Jackson, R. C. 1962 Madrono
!		Helenium amarum (Raf.) H. Rock	Helenium amarum (Raf.) H. Rock	15(1)		Asteracea	Turner & E. 1960 Texas J. Sci.
		Helenium amarum (Raf.) H. Rock	Helenium amarum (Raf.) H. Rock	15		IPCN online	JONES, K., K. Y. Lim & P. J. Cribb. 1982. The chromosomes of orchids VII. Dendrobium. Kew Bull. 37: 221–227.
		Helenium amarum (Raf.) H. Rock	Helenium amarum (Raf.) H. Rock	15		IPCN online	Powell, A. M., D. W. KYHOS & P. H. Raven. 1975. Chromosome numbers in Compositee. XI. Helenieae. Amer. J. Bot. 62: 1100–1103.
		Helenium amarum (Raf.) H. Rock	Helenium amarum (Raf.) H. Rock	15		IPCN online	Keil, D. J. & T. F. Stuessy. 1977. Chromosome counts of Compositae from Mexico and the United States. Amer. J. Bot. 64: 791–798.
!		Helenium amarum (Raf.) H. Rock	Helenium amarum (Raf.) H. Rock		30	IPCN72	GRASHOFF, J.L., M.W. BIERNER, & D.K. NORTHINGTON. 1972. Chromosome numbers in North and Central American Compositae. Brittonia 24: 379-394.
!		Helenium amarum (Raf.) H. Rock	Helenium amarum (Raf.) H. Rock	15		IPCN72	STROTHER, J.L. 1972. Chromosome studies in western North American Compositae. Amer. J. Bot. 59: 242-247.
!		Helenium amarum (Raf.) H. Rock	Helenium amarum (Raf.) H. Rock		30	Fedorov, 1974	Turner, Ellison 196U
!		Helenium amarum var. badium Waterf.	Helenium amarum var. badium Waterf.	15(1)		Asteracea	Bierner 1989 Sida (= J. Bot. Res. Inst. Texas)
!		Helenium amarum var. badium Waterf.	Helenium amarum var. badium Waterf.		30(7)	Asteracea	Grashoff et al. 1972 Brittonia
!		Helenium amarum var. badium Waterf.	Helenium amarum var. badium Waterf.		30	eFlora
!		Helenium badium (A. Gray) Greene	Helenium amarum var. badium Waterf.		30	IPCN72	GRASHOFF, J.L., M.W. BIERNER, & D.K. NORTHINGTON. 1972. Chromosome numbers in North and Central American Compositae. Brittonia 24: 379-394.