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CCDB → Angiosperms → Compositae → Coreopsis → Coreopsis petrophila A. Gray

6 chromosome counts in Coreopsis petrophila A. Gray:

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		Name	Accepted Name	Gametophytic(n)	Sporophytic(2n)	Data Source	reference
!		Coreopsis petrophila A. Gray	Coreopsis petrophila A. Gray		26(1)	Asteracea	Hartman ＆ C. 1971 Taxon
!		Coreopsis petrophila A. Gray	Coreopsis petrophila A. Gray	12(1)		Asteracea	Turner & F. 1966 Amer. J. Bot.
!		Coreopsis petrophila A. Gray	Coreopsis petrophila A. Gray		26	IPCN online	Crawford, D. J. 1982. Chromosome numbers and taxonomic notes for Mexican Coreopsis, sections Electra and Pseudoagarista (Compositae: Heliantheae). Brittonia 34(4): 384–387.
!		Coreopsis petrophila A. Gray	Coreopsis petrophila A. Gray	12	26	IPCN online	Crawford, D. J. 1976. Taxonomy of the Coreopsis sect. Pseudoagarista (Compositae) in Mexico with additional comments on sectional relationships in Mexican Coreopsis. Brittonia 228: 329–336.
!		Coreopsis petrophila A. Gray	Coreopsis petrophila A. Gray	12		IPCN66	Turner & Flyr 1966
!		Coreopsis petrophila A. Gray	Coreopsis petrophila A. Gray		26	IPCN67-71	HARTMAN, R.L., & D.J. CRAWFORD. 1971. In IOPB chromosome number reports XXXI. Taxon 20: 157-160:-