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CCDB → Angiosperms → Compositae → Tithonia → Tithonia speciosa (Hook.) Hook. ex Griseb.

2 chromosome counts in Tithonia speciosa (Hook.) Hook. ex Griseb.:

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		Name	Accepted Name	Gametophytic(n)	Sporophytic(2n)	Data Source	reference
		Tithonia speciosa (Hook.) Hook. ex Griseb.	Tithonia rotundifolia (Mill.) S. F. Blake	17		IPCN online	Gupta, R. C. & B. S. Gill. 1989. Cytopalynology of north and central Indian Compositae. J. Cytol. Genet. 24: 96–105.
		Tithonia speciosa (Hook.) Hook. ex Griseb.	Tithonia rotundifolia (Mill.) S. F. Blake	17		IPCN online	Gupta, R. C. & B. S. Gill. 1979. In IOPB chromosome number reports LXIV. Taxon 28: 401–402.