@book {8544,
	title = {Die Systematik und Anatomie der Arundineae},
	year = {1961},
	month = {1961///},
	publisher = {Weinheim},
	organization = {Weinheim},
	author = {H.J. Conert}
}
@article {8428,
	title = {Amaranthus in Britain},
	journal = {Watsonia},
	volume = {4},
	year = {1961},
	month = {1961///},
	pages = {261 - 280},
	author = {J.P.M. Brenan}
}
@article {8034,
	title = {The genus Lepidium in Canada},
	journal = {Madro{\~n}o},
	volume = {16},
	year = {1961},
	month = {1961///},
	pages = {77 - 89},
	author = {G.A. Mulligan}
}
@article {7866,
	title = {Het geslacht Alternanthera Forsk. in Nederland},
	journal = {Gorteria},
	volume = {1},
	year = {1961},
	month = {1961///},
	pages = {2 - 6},
	author = {S.J. Van Ooststroom and Th.J. Reichgelt}
}
@article {8016,
	title = {Berberis and Mahonia. A taxonomic revision},
	journal = {J. Linn. Soc., Bot},
	volume = {57},
	year = {1961},
	month = {1961///},
	pages = {1 - 410},
	author = {L.W.A. Ahrendt}
}
@article {7945,
	title = {Taxonomy and distribution of the genus Phalaris},
	journal = {Iowa State Journ. Sci},
	volume = {36},
	year = {1961},
	month = {1961///},
	pages = {1 - 96},
	author = {D.E. Anderson}
}
@book {7776,
	title = {Papilionaceae},
	series = {Flore G{\'e}n{\'e}rale de Belgique},
	volume = {4},
	year = {1961},
	month = {1961///},
	pages = {9 - 134},
	publisher = {Jardin Botanique de l_Etat, Bruxelles},
	organization = {Jardin Botanique de l_Etat, Bruxelles},
	author = {A. Lawalr{\'e}e},
	editor = {Robyns, W.}
}
@article {7346,
	title = {Enige voor Belgi{\"e} nieuwe adventieven},
	journal = {Bull. Jard. Bot. Etat Brux},
	volume = {31},
	year = {1961},
	month = {1961///},
	pages = {431 - 441},
	author = {S.J. Van Ooststroom and Th.J. Reichgelt}
}
@article {7034,
	title = {Notes on the cultivated Compositae, 6. The coneflowers: Dracopsis, Echinacea, Ratibida, and Rudbeckia},
	journal = {Baileya},
	volume = {9},
	year = {1961},
	month = {1961///},
	pages = {67 - 93},
	author = {W.J. Dress}
}
