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CCDB → Angiosperms → Polygonaceae → Polygonum → Polygonum raii Bab.

4 chromosome counts in Polygonum raii Bab.:

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		Name	Accepted Name	Gametophytic(n)	Sporophytic(2n)	Data Source	reference
		Polygonum raii Bab.	Polygonum oxyspermum subsp. raii (Bab.) D. A. Webb & Chater		40	IPCN online	Wolf, S. J. & J. McNeill. 1987. Cytotaxonomic studies on Polygonum section Polygonum in eastern Canada and the adjacent United States. Canad. J. Bot. 65: 647–652.
		Polygonum raii Bab.	Polygonum oxyspermum subsp. raii (Bab.) D. A. Webb & Chater		40	IPCN online	Engelskjon, T. 1979. Chromosome numbers in vascular plants from Norway, including Svalbard. Opera Bot. 52: 1–38.
		Polygonum raii Bab.	Polygonum oxyspermum subsp. raii (Bab.) D. A. Webb & Chater		60	Cave1956	Love & Love a
!		Polygonum raii Bab.	Polygonum oxyspermum subsp. raii (Bab.) D. A. Webb & Chater		40	Cave1962	Styles 1962