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CCDB → Angiosperms → Compositae → Senecio → Senecio flaccidus Less.

21 chromosome counts in Senecio flaccidus Less.:

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		Name	Accepted Name	Gametophytic(n)	Sporophytic(2n)	Data Source	reference
		Senecio flaccidus var. flaccidus	Senecio flaccidus Less.	20(1)		Asteracea	Ward 1983 Phytologia
		Senecio flaccidus var. flaccidus	Senecio flaccidus Less.	20(1)		Asteracea	Ward 1983 Phytologia
!		Senecio filifolius Nutt.	Senecio flaccidus Less.	20(2)		Asteracea	Powell & T. 1963 Madrono
		Senecio flaccidus var. flaccidus	Senecio flaccidus Less.	20(1)		Asteracea	Powell et al. 1974 Amer. J. Bot.
		Senecio flaccidus var. flaccidus	Senecio flaccidus Less.	20(1)		Asteracea	Windham & S. 1983 Taxon
		Senecio flaccidus var. flaccidus	Senecio flaccidus Less.	20II(3)		Asteracea	Freeman & B. 1988 Sida (= J. Bot. Res. Inst. Texas)
		Senecio flaccidus Less.	Senecio flaccidus Less.	20II(1)		Asteracea	Powell & W. 2005 Sida (= J. Bot. Res. Inst. Texas)
		Senecio flaccidus var. flaccidus	Senecio flaccidus Less.	20(1)		Asteracea	Powell & T. 1963 Madrono
!		Senecio douglasii var. longilobus (Benth.) L. D. Benson	Senecio flaccidus Less.	20II		IPCN online	Strother, J. L. 1983. More chromosome studies in Compositae. Amer. J. Bot. 70(8): 1217–1232.
!		Senecio douglasii var. longilobus (Benth.) L. D. Benson	Senecio flaccidus Less.	20II		IPCN online	Freeman, C. C. & R. E. Brooks. 1988. Documented plant chromosome numbers 1988: 1. Chromosome counts for North American plants -- I. Sida 13: 241–250.
!		Senecio douglasii var. longilobus (Benth.) L. D. Benson	Senecio flaccidus Less.	20		IPCN online	Ward, D. E. 1983. Chromosome counts from New Mexico and southern Colorado. Phytologia 54: 302–309.
!		Senecio douglasii var. longilobus (Benth.) L. D. Benson	Senecio flaccidus Less.	20		IPCN online	Windham, M. D. & C. Schaack. 1983. Chromosome counts for Adiantaceae, Aspleniaceae, Asteraceae and Poaceae. In: A. Löve (editor), IOPB Chromosome Number Reports LXXXI. Taxon 32: 664–665.
!		Senecio douglasii var. longilobus (Benth.) L. D. Benson	Senecio flaccidus Less.	20		IPCN online	Keil, D. J. & D. J. Pinkava. 1976. Chromosome counts and taxonomic notes for Compositae from the United States and Mexico. Amer. J. Bot. 63: 1393–1403.
!		Senecio douglasii var. longilobus (Benth.) L. D. Benson	Senecio flaccidus Less.	20		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.
		Senecio flaccidus Less.	Senecio flaccidus Less.	20		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.
		Senecio flaccidus Less.	Senecio flaccidus Less.	20II		IPCN online	Powell, A. M. & J. F. Weedin. 2005. Documented chromosome numbers 2005: 2. Counts from western Texas, mostly trans-Pecos cacti. Sida 21(3): 1665–1668.
		Senecio longilobus Benth.	Senecio flaccidus Less.	20		IPCN67-71	ORNDUFF, R., T. MOSQUIN, D. W. KYHOS, & P. H. RAVEN. 1967. Chromosome numbers in Compositae. VI. Senecioneae. II. Am. Jour. Bot. 54: 205-213.
		Senecio longilobus Benth.	Senecio flaccidus Less.		40	IPCN73-74	KOVANDA, M. 1972. Somatic chromosome numbers for some Asteraceae. Rhodora 74: 102-116.
		Senecio longilobus Benth.	Senecio flaccidus Less.	20		IPCN73-74	POWELL, A.M., D.W. KYHOS, & P.H. RAVEN. 1974. Chromosome numbers in Compositae. X. Amer. J. Bot. 61: 909-913.
		Senecio longilobus Benth.	Senecio flaccidus Less.	20		Cave1959	Jackson 1959a
!		Senecio filifolius Nutt.	Senecio flaccidus Less.	20		Cave1963	Powell & T. 1963