@article {7229,
	title = {Revision of the North American species of Erigeron, north of Mexico},
	journal = {Brittonia},
	volume = {6},
	year = {1947},
	month = {1947///},
	pages = {121 - 300},
	author = {A. Cronquist}
}
@article {7230,
	title = {A revision of Ageratina (Compositae: Eupatorieae) from eastern North America},
	journal = {Brittonia},
	volume = {23},
	year = {1971},
	month = {1971///},
	pages = {123 - 143},
	author = {A.F. Clewell and J.W. Wooten}
}
@article {7231,
	title = {Taxonomy of Zinnia},
	journal = {Brittonia},
	volume = {15},
	year = {1963},
	month = {1963///},
	pages = {1 - 25},
	author = {A.M. Torres}
}
@article {7232,
	title = {A biosystematic study of Coreopsis tinctoria and C. cardaminefolia (Compositae)},
	journal = {Brittonia},
	volume = {23},
	year = {1971},
	month = {1971///},
	pages = {161 - 170},
	author = {E.B. Smith and H.M. Parker}
}
@article {7233,
	title = {Astragalus (Fabaceae): A molecular phylogenetic perspective},
	journal = {Brittonia},
	volume = {57},
	year = {2005},
	month = {2005///},
	pages = {382 - 396},
	author = {F. Wojciechowski}
}
@article {7234,
	title = {A revision of the genus Bromus, section Bromopsis, of North America},
	journal = {Brittonia},
	volume = {7},
	year = {1952},
	month = {1952///},
	pages = {415 - 480},
	author = {H.K. Wagnon}
}
@article {7235,
	title = {Diplachne and Leptochloa (Poaceae) in North America},
	journal = {Brittonia},
	volume = {31},
	year = {1979},
	month = {1979///},
	pages = {399 - 404},
	author = {J. McNeill}
}
@article {7236,
	title = {Validity of the grass species Digitaria adscendens},
	journal = {Brittonia},
	volume = {14},
	year = {1962},
	month = {1962///},
	pages = {248 - 253},
	author = {J.E. Ebinger}
}
@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}
}
@article {7238,
	title = {Molecular systematics of Old World Astragalus (Fabaceae) as inferred from nrDNA ITS sequence data},
	journal = {Brittonia},
	volume = {57},
	year = {2005},
	month = {2005///},
	pages = {367 - 381},
	author = {S. Kazempour Osaloo and A.A. Maassoumi and N. Murakami}
}
