@article {8295,
	title = {Panicum dichotomiflorum, a new weed of maize crops in Italy, 2},
	journal = {Sociology and ecology. Maydica},
	volume = {9},
	year = {1964},
	month = {1964///},
	pages = {67 - 76},
	author = {I. Fenaroli and G.G. Lorenzoni}
}
@article {8240,
	title = {On the perianth and seed characters of Chenopodium hybridum and C. gigantospermum},
	journal = {Rhodora},
	volume = {66},
	year = {1964},
	month = {1964///},
	pages = {168 - 171},
	author = {A.I. Baranov}
}
@article {8205,
	title = {Zu der Art der Ausbreitung von Bidens frondosa L. in die Teichgebiete der Tschechoslowakei},
	journal = {Preslia},
	volume = {36},
	year = {1964},
	month = {1964///},
	pages = {416 - 421},
	author = {M. Hejn{\'y} S. \& Lhotsk{\'a}}
}
@article {8209,
	title = {Artemisia sieversiana Willd., eine neue eingeschleppte Art in der Tschechoslowakei},
	journal = {Preslia},
	volume = {36},
	year = {1964},
	month = {1964///},
	pages = {392 - 402},
	author = {S. Hejn{\'y}}
}
@article {7977,
	title = {A re-evaluation of the genus Ambrosia (Compositae)},
	journal = {Journ. Arnold Arbor},
	volume = {45},
	year = {1964},
	month = {1964///},
	pages = {401 - 430},
	author = {W.W. Payne}
}
@article {7963,
	title = {Studies in Alyssum: Near Eastern representatives and their allies, I},
	journal = {J. Arnold Arbor},
	volume = {45},
	year = {1964},
	month = {1964///},
	pages = {57 - 100},
	author = {T.R. Dudley}
}
@article {7964,
	title = {Synopsis of the Alyssum},
	journal = {J. Arnold Arbor},
	volume = {45},
	year = {1964},
	month = {1964///},
	pages = {358 - 373},
	author = {T.R. Dudley}
}
@article {8111,
	title = {Cl{\'e} de d{\'e}termination des esp{\`e}ces du genre Bidens connue en Belgique et dans les r{\'e}gions voisines},
	journal = {Nat. Mosana},
	volume = {17},
	year = {1964},
	month = {1964///},
	pages = {51 - 52},
	author = {M. Debray}
}
@article {7868,
	title = {Erigeron L. sectie Phalacroloma (Cass.) Cronquist in Nederland},
	journal = {Gorteria},
	volume = {2},
	year = {1964},
	month = {1964///},
	pages = {9 - 12},
	author = {S.J. Van Ooststroom and Th.J. Reichgelt}
}
@article {7869,
	title = {De in Nederland adventief gevonden vormen van Scorpiurus muricatus},
	journal = {Gorteria},
	volume = {1},
	year = {1964},
	month = {1964///},
	pages = {37 - 39},
	author = {S.J. Van Ooststroom and Th.J. Reichgelt}
}
@article {7659,
	title = {Zur Verbreitung und Taxonomie der Gattung Ononis in Nordost-Deutschland},
	journal = {Feddes Repert. Spec. Nov. Regni Veg},
	volume = {69},
	year = {1964},
	month = {1964///},
	pages = {103 - 131},
	author = {J. Erdtmann}
}
@article {7631,
	title = {Digitaria ischaemum var. violascens},
	journal = {Elisha Michell Sci. Soc},
	volume = {80},
	year = {1964},
	month = {1964///},
	pages = {172 - 173},
	author = {J. Radford}
}
@article {7471,
	title = {Notas sobre especies de Lepidium de la Argentina},
	journal = {Darwiniana},
	volume = {13},
	year = {1964},
	month = {1964///},
	pages = {506 - 528},
	author = {O. Boelcke}
}
@article {7077,
	title = {Arabis turrita, die Turm-G{\"a}nsekresse, ein isolierter Vorposten s{\"u}dlicher Flora in Franken},
	journal = {Bericht der Naturforschenden Gesellschaft Bamberg},
	volume = {39},
	year = {1964},
	month = {1964///},
	pages = {39 - 44},
	author = {K. Gauckler}
}
@article {7117,
	title = {Petasites fragrans {\`a} Sirault. Bull. Soc. Roy},
	journal = {Bot. Belg},
	volume = {97},
	year = {1964},
	month = {1964///},
	author = {F. Buxant}
}
@article {6941,
	title = {Synopsis of the genus Aurinia in Turkey. J},
	journal = {Arnold Arbor},
	volume = {45},
	year = {1964},
	month = {1964///},
	pages = {390 - 400},
	author = {T.R. Dudley}
}
@article {6908,
	title = {Notas sobre gram{\'\i}neas, 3. Consideraciones acerca de las especies Espanolas del g{\'e}nero Parapholis},
	journal = {Anales Inst. Bot. Cavanilles},
	volume = {22},
	year = {1964},
	month = {1964///},
	pages = {187 - 201},
	author = {E. Paunero}
}
