S. G.  Knees, ?Cirsium?, vol. 6, 2000.

M. C.  Tebbitt, ?Anaphalis?, vol. 6, 2000.

M. F.  Gardner, ?Baccharis?, vol. 6, 2000.

N.  Brown, ?Heliopsis?, vol. 6, 2000.

J. R.  Akeroyd, ?Phyla?, vol. 6, 2000.

J.  De Koning, Van den Broek, J. W., Van de Laar, H. J., and Fortgens, G., Nederlandse dendrologie (13 e druk). H. Veenman & Zonen, Ede, 2000.

G. L.  Nesom, Generic conspectus of the tribe Astereae (Asteraceae) in North America, Central America, the Antilles, and Hawaii. Sida Bot. Misc. 20, 2000.

T.  Wilhalm and Scholz, H., Ein bemerkenswertes Vorkommen von Psathyrostachys juncea und Agropyron desertorum (Poaceae) in der inneralpinen Trockenvegetation, vol. 69-70. Ber. Bayer. Bot. Ges., 2000, pp. 7 - 17.

G. - R.  Walther, ?Laurophyllisation in Switzerland?, 2000.

A. M.  Planchuelo and Peterson, P. M., The species of Bromus (Poaceae: Bromeae) in South America. CSIRO, Melbourne, 2000, pp. 89 - 101.

L.  Reutelingsperger, ?Conyza sumatrensis (Retz.) E. Walker: het begin van de opmars in Nederland??, Gorteria, vol. 26, pp. 224 - 226, 2000.

T.  Karlsson, ?Polygonaceae?, in Flora Nordica, vol. 1, B.  Jonsell, Ed. The Bergius Foundation, 2000, pp. 235 - 318.

G. T. D.  Wilmore, Alien plants of Yorkshire. Nats. Union. Bradford, 2000.

L. E.  Urbatsch, Baldwin, B. G., and Donoghue, M. J., ?Phylogeny of the coneflowers and relatives (Heliantheae: Asteraceae) based on nuclear rDNA internal transcribed spacer (ITS) sequences and chloroplast DNA restriction site data?, Syst. Bot, vol. 25, pp. 539 - 565, 2000.

C. M.  James, Wurzell, B. S., and Stace, C. A., ?A new hybrid between a European and a Chinese species of Artemisia (Asteraceae)?, Watsonia, vol. 23, pp. 139 - 147, 2000.

O.  Gonen and Uygur, F. N., ?A new record for the Flora of Turkey: Amaranthus spinosus L. (Amaranthaceae)?, Turk. J. Bot, vol. 24, no. 6, pp. 359 - 360, 2000.

F.  Sales and Hedge, I. C., ?Melilotus?, Real Jardín Botánico, Madrid, vol. 7, pp. 720 - 731, 2000.

I. C.  Hedge and Sales, F., ?Trigonella?, Real Jardín Botánico, Madrid, vol. 7, pp. 731 - 741, 2000.

J. A.  Devesa, ?Ononis?, Real Jardín Botánico, Madrid, vol. 7, pp. 590 - 646, 2000.

S.  Talavera, ?Scorpiurus?, Real Jardín Botánico, Madrid, vol. 7, pp. 935 - 942, 2000.

R. D.  Noyes, ?Biogeographical and evolutionary insights on Erigeron and allies (Asteraceae) from ITS sequence data?, Pl. Syst. Evol, vol. 220, pp. 93 - 114, 2000.

R. G.  Olmstead, ?Phylogenetic reconstruction of the genus Brachypodium P. Beauv. (Poaceae) from combined sequences of chloroplast ndhF gene and nuclear ITS?, Pl. Syst. Evol, vol. 200, pp. 1 - 19, 2000.

S.  Brullo and de Marco, G., ?Taxonomical revision of the genus Dittrichia (Asteraceae)?, Portugaliae Acta Biol, vol. 19, pp. 341 - 354, 2000.

J. _ervinka Z.  Sádlo, ?Neofyty Ambrosia psilostachya a Celastrus orbiculatus v m_st_ _elákovicích?, Muz. a Sou_asnost, ser. natur, vol. 14, pp. 65 - 68, 2000.

H.  Melzer and Barta, T., ?Crambe hispanica, der Spanische Meerkohl, ein Neufund für Österreich, und weitere floristische Neuigkeiten aus Wien, Niederösterreich und dem Burgenland?, Linzer Biologische Beiträge, vol. 32, no. 1, pp. 341 - 362, 2000.

J.  Lambinon and Verloove, F., ?n° 19853 Agrostis x fouilladei P. Fourn., nom. nudum (?)?, Eur. Bass. Médit., Bull., vol. 28, pp. 104 - 105, 2000.

F.  Verloove, ?Geranium purpureum Vill., ook in Vlaanderen?, Dumortiera, vol. 76, pp. 18 - 20, 2000.

F.  Verloove and Vanhecke, L., ?Myriophyllum aquaticum: expansieve waterneofiet in Vlaanderen?, Dumortiera, vol. 76, pp. 28 - 29, 2000.

E. J.  Clement, ?Digitaria ciliaris established in Gosport (S. Hants, V.C. 1)?, BSBI News, vol. 83, pp. 37 - 39, 2000.

E. J.  Clement, ?More about Zizania latifolia?, BSBI News, vol. 83, pp. 40 - 41, 2000.

F.  Verloove, ?N° 19878 Digitaria aequiglumis (Hack. et Arech.) Parodi. Soc. Ech. Pl. Vasc. Eur. Bass. Médit?, Bull, vol. 28, 2000.

S.  Talavera, ?Notas sobre el género Hippocrepis L. (Papilionoideae, Leguminosae) en la Península Ibérica y Baleares. An. Jard?, Bot. Madrid, vol. 57, no. 2, pp. 454 - 463, 2000.

M.  Hollings and Hollings, O., ?Zizania latifolia _ fit and flourishing over-abundantly in a West Sussex pond?, BSBI News, vol. 85, pp. 39 - 40, 2000.

K. W.  Page, ?Zizania latifolia (Poaceae) naturalized in Surrey (v.c. 17)?, BSBI News, vol. 84, pp. 38 - 39, 2000.

A.  Prina, ?A taxonomic revision of Crambe, sect. Leptocrambe (Brassicaceae)?, Bot. J. Linn. Soc, vol. 133, no. 4, pp. 509 - 524, 2000.

M. E.  Ferguson, Maxted, N., Van Slageren, M., and Robertson, L. D., ?A re-assessment of the taxonomy of Lens Mill. (Leguminosae, Papilionoideae, Viceae)?, Bot. J. Linn. Soc, vol. 133, no. 1, pp. 41 - 59, 2000.

H.  Scholz, ?Bromus bidentatus spec. nova and B. lepidus, two odd brome-grasses (Gramineae)?, Bot. Jahrb. Syst, vol. 122, pp. 195 - 200, 2000.

B. R.  Randell, ?Cassia and Senna: a review of the groups of plants formerly known as Cassia?, Austral. Pl, vol. 20, no. 162, pp. 238 - 249, 2000.

F. M.  Vázquez, ?The genus Scolymus Tourn. ex L. (Asteraceae): taxonomy and distribution?, Anales Jard. Bot. Madrid, vol. 58, no. 1, pp. 83 - 100, 2000.

F.  Verloove and Vanhecke, L., ?Myriophyllum aquaticum: expansieve waterneofiet in Vlaanderen?, Dumortiera, vol. 76, pp. 28-29, 2000.

F.  Verloove, ?Geranium purpureum Vill., ook in Vlaanderen?, Dumortiera, vol. 76, pp. 18-20, 2000.