@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}
}
@article {684,
	title = {Two New Species of Stifftia with Notes on Relationships of the Genus (Asteraceae: Mutisieae)},
	journal = {Systematic Botany},
	volume = {16},
	year = {1991},
	pages = {685-692},
	author = {Harold Robinson}
}
@article {683,
	title = {A New Combination in Stifftia (Compositae: Mutisieae)},
	journal = {Kew Bulletin},
	volume = {53},
	year = {1998},
	pages = {617-622},
	author = {D.J.N. Hind and J. Semir}
}
@inbook {682,
	title = {The basal grade of Compositae: Mutisiae (sensu Cabrera) and Carduioideae},
	booktitle = {Systematics, Evolution, and Biogeography of Compositae},
	year = {2009},
	author = {Vicki A. Funk and Alfonso Susanna and Tod F. Stuessy and Bayer, Randall J.}
}
