@book {8499,
	title = {Biosystematic approaches to the solution of taxonomic problems in Israel},
	year = {1971},
	month = {1971///},
	pages = {181 - 193},
	author = {C.C. Heyn}
}
@article {8407,
	title = {Beitr{\"a}ge zur {\"O}kologie von Chenopodium botrys L.: 2. Produktion an Ruderalstandorten},
	journal = {Verh. Bot. Ver. Prov. Brandenburg},
	volume = {108},
	year = {1971},
	month = {1971///},
	pages = {26 - 28},
	author = {H. Dapper}
}
@article {8408,
	title = {Beitr{\"a}ge zur {\"O}kologie von Chenopodium botrys L.: 1. Verbreitung und Vergesellschaftung},
	journal = {Verh. Bot. Ver. Prov. Brandenburg},
	volume = {108},
	year = {1971},
	month = {1971///},
	pages = {3 - 25},
	author = {H. Sukopp}
}
@article {8409,
	title = {Beitr{\"a}ge zur {\"O}kologie von Chenopodium botrys L. 6. Die {\"o}kologische Konstitution von Chenopodium botrys},
	journal = {Verh. Bot. Ver. Prov. Brandenburg},
	volume = {108},
	year = {1971},
	month = {1971///},
	pages = {64 - 74},
	author = {R. Bornkamm and H. Sukopp}
}
@article {8151,
	title = {Obzor vidov roda Lens Mill. (Conspectus specierum generis Lens Mill.)},
	journal = {Nov. Sist. Vys{\v s}. Rast.},
	volume = {8},
	year = {1971},
	month = {1971///},
	pages = {184 - 191},
	author = {Z.V. Chefranova}
}
@article {8142,
	title = {Die Bach-Kratzdistel, Cirsium rivulare, in der Niederlausitz},
	journal = {Niederlausitzer Floristische Mitteilungen},
	volume = {6},
	year = {1971},
	month = {1971///},
	pages = {32 - 40},
	author = {G. Klemm}
}
@article {8287,
	title = {The double rockets},
	journal = {J. Roy. Hort. Soc},
	volume = {96},
	year = {1971},
	month = {1971///},
	pages = {188 - 189},
	author = {E. Hodgkin}
}
@article {8065,
	title = {Verbreitung und Vergesellschaftung von Impatiens glandulifera an der Leitha},
	journal = {Mitteilungen der Botanischen Arbeitsgemeinschaft am {\"O}ber{\"o}sterreichischen Landesmuseum Linz},
	volume = {3},
	year = {1971},
	month = {1971///},
	pages = {45 - 50},
	author = {W. Holzner}
}
@article {7968,
	title = {Eupatorium rugosum is found in Tokyo},
	journal = {J. Jap. Bot},
	volume = {46},
	year = {1971},
	month = {1971///},
	author = {K. Hisauchi}
}
@article {8097,
	title = {Pr{\'e}sence d{\textquoteright}Impatiens parviflora dans la r{\'e}gion de Charleroi},
	journal = {Nat. Mosana},
	volume = {23},
	year = {1971},
	month = {1971///},
	pages = {3 - 4},
	author = {J. Duvigneaud}
}
@article {7879,
	title = {Glyceria striata (Lam.) Hitchc. - ein Neub{\"u}rger in Deutschlands Gramineenflora},
	journal = {G{\"o}tt. Florist. Rundbr.},
	volume = {5},
	year = {1971},
	month = {1971///},
	pages = {63 - 68},
	author = {H. Haeupler}
}
@article {7811,
	title = {Santolinas},
	journal = {Gard. Chron.},
	volume = {169},
	year = {1971},
	month = {1971///},
	pages = {37 - 39},
	author = {R. Lancaster}
}
@article {7663,
	title = {The genus Agrostis L. in eastern Fennoscandia. Taxonomy and distribution},
	journal = {Fl. Fenn},
	volume = {5},
	year = {1971},
	month = {1971///},
	pages = {1 - 209},
	author = {K.-G, Widen}
}
@article {7484,
	title = {Cytisus en Genista},
	journal = {Dendroflora},
	volume = {8},
	year = {1971},
	month = {1971///},
	pages = {3 - 18},
	author = {H.J. Van de Laar}
}
@article {7429,
	title = {Die Gattung Aubrieta in Griechenland},
	journal = {Candollea},
	volume = {25},
	year = {1971},
	month = {1971///},
	pages = {69 - 87},
	author = {D. Phitos}
}
@article {7169,
	title = {Studies in the Aegean: 19. Notes on Alyssum and some other genera of Cruciferae},
	journal = {Bot. Notiser},
	volume = {124},
	year = {1971},
	month = {1971///},
	pages = {399 - 418},
	author = {J. Persson}
}
@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 {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 {7140,
	title = {Beobachtungen an den europ{\"a}ischen Arten der Gattung Vincetoxicum},
	journal = {Bot. J. Linn. Soc},
	volume = {64},
	year = {1971},
	month = {1971///},
	pages = {370 - 376},
	author = {F. Markgraf}
}
@article {7040,
	title = {Corrigiola litoralis L. und Corispermum leptopterum (Aschers.) Iljin, zwei f{\"u}r die Schweiz seltene Adventivarten},
	journal = {Bauhinia},
	volume = {4},
	year = {1971},
	month = {1971///},
	pages = {191 - 196},
	author = {C. Heitz and A. Weniger}
}
@article {6929,
	title = {A monograph of the genus Ageratum L. (Compositae-Eupatorieae)},
	journal = {Ann. Missouri Bot. Gard},
	volume = {58},
	year = {1971},
	month = {1971///},
	pages = {6 - 88},
	author = {M.F. Johnson}
}
@article {6917,
	title = {The genus Hippophae L., a taxonomic study},
	journal = {Ann. Bot. Fenn},
	volume = {8},
	year = {1971},
	month = {1971///},
	pages = {177 - 227},
	author = {A. Rousi}
}
