Western Australia Department of Agriculture (AgWest) Hawaiian Ecosystems at Risk project (HEAR) Global Compendium of Weeds (GCW) Global Compendium of Weeds
Lactuca virosa (Asteraceae)

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Presented here is summary information about the species Lactuca virosa from the Global Compendium of Weeds, and citations of references to this species as a weed. Definitions of terms are available in the GCW introduction View info about Adobe Acrobat PDF format. For further information--or to report corrections or concerns--contact webmaster@hear.org.

Synonyms/other Latin names: [ see GRIN ]

Status(es) (compiled for below "Data sources"): agricultural weed, casual alien, cultivation escape, environmental weed, naturalised, weed [for definitions, see the GCW introduction View info about Adobe Acrobat PDF format.]

Origin (native to where): [no info]


Data sources:

A list of weed species from various New Zealand references to "weeds" compiled by P.A.Williams, Landcare Research, New Zealand. (naturalised, weed)

Alanen, A., Bongard, T., Einarsson, E., Hansen, H., Hedlund, L., Jansson, K., Josefsson, M., Philipp, M., Sandlund, O.T., Svart, A.E., Svart, H.E. and Weidema, I. (2004?). Introduced Species in the Nordic Countries (Denmark) under Nordic Council of Ministers (NMR), subgroup Natur-og Friluftslivsgruppen. (cultivation escape)

Alien Species. On March 10, the Japanese Cabinet submitted the bill dealing with invasive alien species to the Diet. The Diet passed the bill without amendments and the Invasive Alien Species Act was promulgated as of June 2, 2004. List of alien species recognized to be established in Japan or found in the Japanese wild (as of October 27, 2004) [PDF] (naturalised)

Annual/Biennial Seed Germination Database (weed) http://www.anet.com/~manytimes/index.htm (weed) [ online info ]

Botond, M. & Zoltán, B.D.(eds.) (2004) Biological Invasions in Hungary. Invasive Plants. TermészetBUVAR Alapítvány Kiadó. (casual alien)

Check-list of the Flowering Plants and Ferns of Cornwall and the Isles of Scilly - 1994 C.N. French and R.J. Murphy. University of Exeter (casual alien)

Colin C. Ogle (last revision May 2003). Adventive plants collected in the Wanganui Conservancy of the New Zealand Department of Conservation, 1988-present. (Unpublished working list).  Author's address: 22 Forres St, Wanganui, New Zealand.  Email: robcol.ogle@xtra.co.nz (naturalised)

HortGuard and GrainGuard Initial Threat List Compilations (agricultural weed)

Introduced (Naturalised) Species to the United States [USDA, NRCS 1999. The PLANTS database. National Plant Data Center, Baton Rouge, LA 70874-4490 USA. ] (naturalised)

Keighery, G. and Longman, V. (2004). The naturalized vascular plants of Western Australia 1: Checklist, environmental weeds and Distribution in IBRA Regions. Plant Protection Quarterly Vol.19 (1). pp:12-32. (environmental weed, naturalised)

Landcare Research New Zealand (2001) Plant Names Database. (naturalised)

Marticorena, C. (2000?) Naturalised Plants of Chile. University of Santiago Herbarium. (naturalised)

Pat Enwright (2003) Adventive species of the Wellington Conservancy ecological district. Project initiated by John Sawyer of D.O.C and further refined and updated by Colin Ogle of Wanganui before Ewen Cameron and Mei Nee Lee of the Auckland Museum herbarium very kindly provided lists of adventive species by ecological district for the Wellington Conservancy from the AK database. I must also thank Ewen Cameron and Rhys Gardner for identification of a number of specimens included in this list, Phillipa Crisp from W.R.C. also supplied information on species recorded by or on behalf of W.R.C and not already included in the database. Pat Enwright pers. comm. [Pat.Enright@nz.towerlimited.com] (naturalised)

Pysek, P., Sadlo, J. and Mandak (2002) Catalogue of Alien Plants of the Czech Republic. Preslia, Praha. 74:97-186. (casual alien)

Roy, B., Popay, I., Champion, P., James, T., and Rahman, A. (1998). An illustrated guide to the common weeds of New Zealand. New Zealand Plant Protection Society, R.G. & F.J. Richardson. (weed)

The Research Institute for Bioresources. Okayama University. Laboratory of Wild Plant Science. "Naturalized plants from foreign country into Japan". (naturalised)

The invading weeds of the culture of the maize and their control. Jose Luis Villarías Moradillo. Engineer Dr agronomist. Titular Professor of University. Director of the Institute of Investigation of Natural Resources of the University of Leon. (agricultural weed)

Thornton, B.J. and Durrell, L.W. (1933) Colorado Weeds. Bulletin 403, Colorado Agricultural College, Colorado Experimental Station, Fort Collins. (agricultural weed)

Unité de Malherbologie & Agronomie Weed Science & Agronomy INRA-Dijon This encyclopedic database on plant protection catalogues the main weeds (580) of western Europe, describes the species at two stages: mature plants and seedlings, and provides information on their taxonomy, their distribution and their ecology. Copyright (c) 2000 INRA, all rights reserved ; J.-P. Lonchamp, Nov. 2000 (agricultural weed)

Williams, G. and Hunyadi, K. (1987). Dictionary of Weeds of Eastern Europe: Thier common names and importance in Latin, Albanian, Bulgarian, Czech, German, English, Greek, Hungarian, Polish, Romanian, Russian, Serbo-Croat and Slovak. Elsevier. Amsterdam. (weed)

Williams, G.H. (1982). Elseviers's Dictionary of Weeds of Western Europe. Elsevier Scientific Publishing Company Amsterdam, Holland. (weed)



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This page was created on 13 September 2007 by PT, and was last updated on 04 October 2007 by PT based on data from Rod Randall's Global Compendium of Weeds database dated 24 January 2007. Valid HTML 4.01!