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CCDB → Angiosperms → Compositae → Silphium → Silphium asperrimum Hook.

5 chromosome counts in Silphium asperrimum Hook.:

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		Name	Accepted Name	Gametophytic(n)	Sporophytic(2n)	Data Source	reference
		Silphium asperrimum Hook.	Silphium asperrimum Hook.		14	IPCN67-71	SETTLE, w. J. 1967. The chromosome morphology in the genus Silphium (Compositae). Ohio Jour. Sci. 67: 10-19.
		Silphium asperrimum Hook.	Silphium asperrimum Hook.		14	Fedorov, 1974	Fisher T. R., Cruden 1962
		Silphium asperrimum Hook.	Silphium asperrimum Hook.		16	Fedorov, 1974	Lewis W. H. et al. 1962
		Silphium asperrimum Hook.	Silphium asperrimum Hook.	8	16	Cave1962	Lewis et al, 1962
		Silphium asperrimum Hook.	Silphium asperrimum Hook.	7		Cave1962	Fisher & Cruden 1962