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CCDB → Gymnosperms → Zamiaceae → Encephalartos → Encephalartos altensteinii Lehm.

3 chromosome counts in Encephalartos altensteinii Lehm.:

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		Name	Accepted Name	Gametophytic(n)	Sporophytic(2n)	Data Source	reference
		Encephalartos altensteinii Lehm.	Encephalartos altensteinii Lehm.		18	IPCN67-71	MARCHANT, C.J. 1968. Chromosome patterns and nuclear phenomena in the cycad families Stangeriaceae and zamiaceae. Chromosoma 24: 100-134.
!		Encephalartos altensteinii Lehm.	Encephalartos altensteinii Lehm.		18	Darlington, 1955	Resende 1940
!		Encephalartos altensteinii Lehm.	Encephalartos altensteinii Lehm.		18	Rastogi2019	Marchant CJ. Chromosome patterns and nuclear phenomena in the cycad families Stangeriaceae and Zamiaceae. Chromosoma. 1968;24:100–34.