Literature

Authorssort descendingYearTitle
Böcker, R, Erzberger, P, Scholz, H1990Bromus diandrus Roth
Carretero, JL1990Amaranthus
Caulkins, DB, Wyatt, R1990Variation and taxonomy of Phytolacca americana and P. rigida in the southeastern United States
Gerstberger, P1990Zum Vorkommen von Lepidium heterophyllum (DC) BENTH. (Brassicaceae) in der Eifel
Helfrich, T, Lohwasser, W1990Zur Verbreitung der Behaarten Karde (Dipsacus pilosus L.) und der Schlanken Karde (Dipsacus strigosus Willd. ex Roemer et Schultes) in Oberfranken
Helwig, F1990Die Gattung Baccharis L. (Compositae-Asteraceae) in Chile
Hermans, P1990De wateringen
Hipken, C1990Bidens (Bur-marigolds) in Glamorgan
Jauzein, P1990Rumex cristatus DC. en France
Jehlík, V1990Amaranthaceae
Korneck, D1990Artemisia austriaca Jacq. bei Bamberg
Korneck, D1990Der Österreichische Beifuß (Artemisia austriaca Jacq.) im nördlichen Oberrheingebiet
Lambinon, J, J.-M, D1990A propos de quelques adventices d_origine méditerranéenne observées à Slins (province de Liège, Belgique)
Lannoy, M1990Une adventice nouvelle pour la Belgique: Conyza sumatrensis à Châtelineau (province du Hainaut)
M. Lhotska, KK &1990K _í_ení druhu Atriplex sagittata
Nesom, GL1990Studies in the systematics of Mexican and Texan Grindelia (Asteraceae: Astereae)
Palmer, JR1990Arabis turrita - a garden weed in West Kent
Rechinger, KH1990Zwei kritische Rumex- Arten, R. longifolius DC. und R. aquitanicus Rech. f., und ihre Verbreitung
Small, E, Brookes, B1990A numerical taxonomic analysis of the Medicago littoralis - M. truncatula complex
Spring, O, Schilling, EE1990The origin of Helianthus x multiflorus and H. x laetiflorus (Asteraceae)
Suh, Y, Simpson, BB1990Phylogenetic Analysis of Chloroplast DNA in North American Gutierrezia and Related Genera (Asteraceae: Astereae)
Trpin, D1990Alyssum montanum _ komplex na jugovzhodnem obrobju Alp
Vasic, O1990Ambrosia trifida L. 1753 (Asteraceae): new adventive plant in Slovenia (Yugoslavia)
Wake, AJ1990The present status of Lepidium latifolium with particular reference to Essex
Weber, HE1990Panicum dichotomiflorum Michaux, ein neues Unkraut der Maisäcker in Nordwestdeutschland
Webster, RD, Hatch, SL1990Taxonomy of Digitaria section Aequiglumae (Poaceae: Paniceae)
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith