@article {511,
	title = {Chromosome Numbers in Compositae. XIII. Eupatorieae},
	journal = {Annals of the Missouri Botanical Garden},
	volume = {63},
	year = {1976},
	pages = {862-888},
	author = {Robert M. King and Donald W. Kyhos and A. Michael Powell and Peter H. Raven and Harold Robinson}
}
