@inbook {619,
	title = {Compositae},
	booktitle = {Die Nat{\"u}rlichen Pflanzenfamilien},
	volume = {4(5)},
	year = {1894},
	pages = {87-387},
	publisher = {Engelmann},
	organization = {Engelmann},
	address = {Leipzig},
	author = {Hoffmann, P.},
	editor = {Engler, A and K. Prantl}
}
@inbook {114,
	title = {Cirsium},
	booktitle = {Flora of North America},
	volume = {19},
	year = {2006},
	pages = {95-164},
	publisher = {Oxford University Press},
	organization = {Oxford University Press},
	edition = {2010},
	address = {New York, NY},
	author = {David J. Keil},
	editor = {Flora of North America Editorial Committee}
}
