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A.  Vilks, Un genêt a fleurs blanches: Cytisus multiflorus Sweet naturalisé(?)en Haute-Vienne. Bull. Soc. Bot. Centre-Ouest n, 1973, pp. 40 - 44.

J. B.  Marshall, ?Conyza-taxa found in Britain?, Watsonia, vol. 9, pp. 372 - 373, 1973.

A.  Schneider, ?Découverte d'une deuxième localité de Verbesina alternifolia (L.) Britton, composée radiée?, Monde Pl, vol. 377, 1973.

J.  Lebeau, ?Excursion du 18 août 1973 dans la région au nord-ouest de Charleroi à Souvret et Goutroux?, Nat. Mosana, vol. 26, no. 4, pp. 132 - 135, 1973.

H.  Vollrath, ?Medicago sativa in Mitteleuropa angebaut und verwildert??, Gött. Florist. Rundbr., vol. 7, no. 1, pp. 9 - 13, 1973.

P.  MacPherson, ?Petasites japonicus?, Glasgow Naturalist, vol. 19, 1973.

F.  Dvo_ák, ?Infrageneric classification of Hesperis L?, Feddes Repert, vol. 84, no. 4, pp. 259 - 271, 1973.

J.  Timbal, ?Le baguenaudier (Colutea arborescens L.) en Lorraine?, Bull. Soc. Bot. France, vol. 118, no. 9, pp. 837 - 840, 1973.

B.  Tatic and Zukowski, W., ?Bidens vulgata Greene in Yugoslavia?, Bull. Inst. Jard. Bot. Univ. Beograd, vol. 8, pp. 125 - 128, 1973.

J.  Le Clerch, ?Introduction d_une nouvelle Graminée en France: Panicum dichotomiflorum Michx?, Bull. Soc. Bot. Fr., vol. 120, pp. 223 - 226, 1973.

A.  Danin, ?On three adventive species of Conyza (Compositae) in Greece?, Candollea, vol. 31, pp. 107 - 109, 1973.

R. B.  Majumdar, ?The genus Panicum Linn. in India?, Bull. Bot. Soc. Bengal, vol. 27, pp. 39 - 54, 1973.

L.  Engstrand and Gustafsson, M., ?Drawings of Scandinavian plants: 86-88. Chenopodium L?, Bot. Notiser, vol. 126, no. 2, pp. 135 - 141, 1973.

M. I.  Hakki, ?Blütenmorphologische und embryologische Untersuchungen an Chenopodiaceae: Monolepis trifida Schrad?, Bot. Jahrb, vol. 93, no. 4, pp. 481 - 497, 1973.

J. F.  Veldkamp, ?A revision of Digitaria in Malesia?, Blumea, vol. 21, pp. 1 - 80, 1973.

M. J.  & V. Feráková, ?Chorisporatenella (Pall.) DC., novýdruhslovenskejflóry?, Biologia, A (Czechoslovakia) 28, no. 1, pp. 73 - 76, 1973.

W. E.  Abel and Austin, D. F., ?Natural hybridization in Ipomoea (Convolvulaceae)?, Amer. J. Bot., vol. 60, pp. 33 - 34, 1973.