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CCDB → Angiosperms → Alismataceae → Helanthium → Helanthium tenellum (Mart.) J. G. Sm.

3 chromosome counts in Helanthium tenellum (Mart.) J. G. Sm.:

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		Name	Accepted Name	Gametophytic(n)	Sporophytic(2n)	Data Source	reference
!		Echinodorus tenellus (Mart.) Buchenau	Helanthium tenellum (Mart.) J. G. Sm.		22	IPCN online	Costa, J. Y. & E. R. Forni-Martins. 2003. Karyology of some Brazilian species of Alismataceae. Bot. J. Linn. Soc. 143(2): 159–164.
!		Echinodorus tenellus (Mart.) Buchenau	Helanthium tenellum (Mart.) J. G. Sm.		22	IPCN online	Costa, J. Y. 2006. Karyotype characterization of five Brazilian species of Echinodorus (Alismataceae) with chromosomal banding and 45S rDNA FISH. Pl. Syst. Evol. 257: 119–127.
!		Echinodorus tenellus (Mart.) Buchenau	Helanthium tenellum (Mart.) J. G. Sm.		22, 33	IPCN online	Costa. 2004. A triploid cytotype of Echinodorus tenellus. Aquatic Bot. 79: 325–332.