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CCDB → Angiosperms → Cactaceae → Echinocereus → Echinocereus polyacanthus Engelm.

2 chromosome counts in Echinocereus polyacanthus Engelm.:

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		Name	Accepted Name	Gametophytic(n)	Sporophytic(2n)	Data Source	reference
!		Echinocereus santaritensis W. Blum & Rutow	Echinocereus polyacanthus Engelm.	22		Baker, 2009
		Echinocereus santaritensis W. Blum & Rutow	Echinocereus polyacanthus Engelm.	22		IPCN online	Baker, M. 2006. A new florally dimorphic hexaploid, Echinocereus yavapaiensis sp. nov. (section Triglochidiatus, Cactaceae) from central Arizona. Pl. Syst. Evol. 258: 63–83.