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CCDB → Angiosperms → Compositae → Lactuca → Steptorhamphus petraeus Grossh.

2 chromosome counts in Steptorhamphus petraeus Grossh.:

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		Name	Accepted Name	Gametophytic(n)	Sporophytic(2n)	Data Source	reference
!		Steptorhamphus petraeus Grossh.	Lactuca tuberosa Jacq.		16	IPCN online	Nazarova, E. A. 1984. Chromosome numbers in the Caucasian representatives of the families Asteraceae, Brassicaceae, Fabaceae, Limoniaceae. Bot. Zhurn. SSSR 69(7): 972–975. (In Russian).
!		Steptorhamphus petraeus Grossh.	Lactuca tuberosa Jacq.		16	IPCN online	Nazarova. 2004. Pages 1--171 in Chromosome Numbers of Flowering Plants of Armenian Flora. Yerevan.