@article {7237,
	title = {Comparative capitular morphology and anatomy of Coreopsis L. and Bidens L. (Compositae), including a review of generic boundaries},
	journal = {Brittonia},
	volume = {47},
	year = {1995},
	month = {1995///},
	pages = {61 - 91},
	author = {M. Tadesse and D.J. Crawford and E.B. Smith}
}
