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CCDB → Angiosperms → Compositae → Rudbeckia → Rudbeckia hirta L.

26 chromosome counts in Rudbeckia hirta L.:

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		Name	Accepted Name	Gametophytic(n)	Sporophytic(2n)	Data Source	reference
		Rudbeckia hirta L.	Rudbeckia hirta L.	19	38	CHROBASE	BATTAGLIA E. - 1946. Ricerche cariologiche ed embriologiche sul genere Rudbeckia (Asteraceae).I-V.Il gametofito femminile e maschile di R.bicolor Nutt., R.hirta L., R.hirta L. var.meine freude Hort., R.amplexicaulis Wahl. e R.purpurea L. (=Echinacea purpurea Moench).. N. Giorn. Bot. Ital., n.s. , 53: 1/1/2026.
!		Rudbeckia hirta L.	Rudbeckia hirta L.		38	flora of NW Europe	http://wbd.etibioinformatics.nl/bis/flora.php?selected=beschrijving&menuentry=soorten&id=4128
		Rudbeckia hirta L.	Rudbeckia hirta L.		38	Poland Database	Pogan E., Czapik R., Jankun A., Kuta E. et al. 1982 a. Further studies in chromosome numbers of Polish Angiosperms. Part XV. Acta Biol. Cracov. Ser. Bot. 24, 91-126.
!		Rudbeckia hirta var. hirta	Rudbeckia hirta L.	19(1)		Asteracea	Battaglia 1946a Nuovo Giorn. Bot. Ital. (= Plant Biosystems)
!		Rudbeckia hirta L.	Rudbeckia hirta L.		74(1)	Asteracea	AI-Atabee, J. S. et al. 1990 Plant Cell Reports
		Rudbeckia serotina Nutt.	Rudbeckia hirta L.		38, 38+1B(1, 1)	Asteracea	Mulligan 1959 Canad. J. Bot. (= Botany)
		Rudbeckia hirta L.	Rudbeckia hirta L.	19, 38(1, 1)		Asteracea	Parfitt 1981 Taxon
		Rudbeckia hirta L.	Rudbeckia hirta L.		38	IPCN online	Love, A. & D. Love. 1982. In: A Löve (ed.), IOPB chromosome number reports LXXV. Taxon 31(2): 344–360.
		Rudbeckia hirta L.	Rudbeckia hirta L.		38	IPCN online	Pogan, E. 1982. Further studies in chromosome numbers of Polish angiosperms. Part XVI. Acta Biol. Cracov., Ser. Bot. 24: 159–189.
		Rudbeckia hirta L.	Rudbeckia hirta L.		38	IPCN online	Wcislo, H. 1987. Chromosome numbers of certain Canadian plants. Acta Biol. Cracov., Ser. Bot. 29: 19–30.
		Rudbeckia hirta L.	Rudbeckia hirta L.		76	IPCN online	Wang, X. l. & M. x. Li. 1987. Observation of chromosomes on 10 composite species. J. Wuhan Bot. Res. 5: 111–117.
		Rudbeckia hirta L.	Rudbeckia hirta L.	19		IPCN online	Mulligan, G. A. 1984. Chromosome numbers of some plants native and naturalized in Canada. Naturaliste Canad. 111: 447–449.
		Rudbeckia hirta L.	Rudbeckia hirta L.		38	IPCN online	Probatova, N. S., E. G. Rudyka & A. P. Sokolovskaya. 1996. Chromosome numbers in synanthropic plants from the Russian Far East. Bot. Žhurn. (Moscow & Leningrad) 81(5): 98–101.
		Rudbeckia hirta L.	Rudbeckia hirta L.		38	IPCN online	Morton, J. K. 1981. Chromosome numbers in Compositae from Canada and the U.S.A. Bot. J. Linn. Soc. 82: 357–368.
		Rudbeckia hirta L.	Rudbeckia hirta L.	19,38	38	IPCN online	Parfitt, B. D. 1981. ln Chromosome number reports LXXI. Taxon 30: 515–516.
		Rudbeckia hirta L.	Rudbeckia hirta L.		38	IPCN online	Chen, R. y., W. q. Song, X. l. Li, M. x. Li, G. l. Liang & C. b. Chen. 2003. Chromosome Atlas of Major Economic Plants Genome in China, Vol. 3, Chromosome Atlas of Garden Flowering Plants in China. Science Press, Beijing.
		Rudbeckia serotina Nutt.	Rudbeckia hirta L.		72	IPCN online	Gupta, R. C. & B. S. Gill. 1989. Cytopalynology of north and central Indian Compositae. J. Cytol. Genet. 24: 96–105.
		Rudbeckia serotina Nutt.	Rudbeckia hirta L.		72	IPCN online	Gupta, R. C. & B. S. Gill. 1981. In Chromosome number reports LXXI. Taxon 30: 514.
		Rudbeckia serotina Nutt.	Rudbeckia hirta L.		40	IPCN72	KAPOOR, B.M. 1972. In IOPB chromosome number reports XXXV. Taxon 21: 161-166.
		Rudbeckia hirta L.	Rudbeckia hirta L.		38	IPCN73-74	KOVANDA, M. 1972. Somatic chromosome numbers for some Asteraceae. Rhodora 74: 102-116.
		Rudbeckia hirta var. hirta	Rudbeckia hirta L.		38	eFlora
		Rudbeckia hirta L.	Rudbeckia hirta L.		38	Fedorov, 1974	Battaglia 1947a
		Rudbeckia hirta L.	Rudbeckia hirta L.		38	Fedorov, 1974	Perdue 1959
!		Rudbeckia hirta L.	Rudbeckia hirta L.		38	C-values database	Olszewska MJ, Osiecka R. 1983 Relationship between 2C DNA content, life-cycle, systematic position of DNA endoreplication dynamics in parenchyma nuclei during growth & differentiation of roots in dicot herbaceous sp. Biochem Physiol Pflanzen 178: 581-599
		Rudbeckia hirta var. hirta	Rudbeckia hirta L.		38	Cave1959	Perdue 1959
		Rudbeckia serotina Nutt.	Rudbeckia hirta L.		38+1B	Cave1959	llulligan 1959