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CCDB → Angiosperms → Cactaceae → Mammillaria → Mammillaria tetrancistra Engelm.

3 chromosome counts in Mammillaria tetrancistra Engelm.:

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		Name	Accepted Name	Gametophytic(n)	Sporophytic(2n)	Data Source	reference
!		Mammillaria tetrancistra Engelm.	Mammillaria tetrancistra Engelm.		22	eFlora
!		Phellosperma tetrancistra (Engelm.) Britton & Rose	Mammillaria tetrancistra Engelm.		22	Fedorov, 1974	Remski 1954
!		Phellosperma tetrancistra (Engelm.) Britton & Rose	Mammillaria tetrancistra Engelm.		22	Darlington, 1955	Remski 1954