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

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Presented here is summary information about the species Ageratum houstonianum 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, garden thug, naturalised, noxious weed, weed [for definitions, see the GCW introduction View info about Adobe Acrobat PDF format.]

Origin (native to where): Mexico, C America, "Mexico, Guatem., Peru", Mexico, trop Amer (introduced to USA), Central and South America, Central American , tropical America, "Mexico, Tropical America ", North America

Data sources:

ANEXO 1 - Espécies introduzidas em Portugal continental - (I) Invasoras. Legislaçao Nacional Decreto-Lei no. 565/99 de 21-12-1999 (Versao 1 Originária) Decreto-Lei565/9921-12-1999 Ministério do Ambiente Regula a introduçao na natureza de espécies nao indígenas da flora e fauna. Espécies nao indígenas da flora e da fauna 21-12-1999295 fauna, flora, animais domésticos, espécies de fauna ameaçadas, protecçao dos animais, vegetaçao Direito do Ambiente 1999-12-21 S (naturalised)

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. (casual alien, 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)

An analysis of 233 species of important and potentially important invasive plants in South Africa (i.e. the reason for importation). The species were extracted from the book Henderson, L. 2001. Alien weeds and invasive plants. Plant Protection Research Institute Handbook No. 12. (L. Henderson pers. comm.)

Anon, (----). Species introduced in Continental Portugal [Espécies introduzidas em Portugal Continenta]. ICN - Instituto da Conservacao da Natureza. (naturalised)

Auld, B.A. and Medd, R.W. (1992) WEEDS, An illustrated botanical guide to the weeds of Australia. Inkata Press, Melbourne. (weed)

Batianoff, G.N. and Butler, D.W. (2002). Assessment of Invasive naturalized plants in south-east Queensland. Appendix. 1 Plant Protection Quarterly 17, 27-34. (environmental weed, naturalised)

Biological Diversity of the Guianas (BDG) Guyana; Surinam; French Guiana. The Checklist of the Plants of the Guianas; 2nd Edition (edited by J. Boggan; V. Funk; C. Kelloff; M. Hoff; G. Cremers; & C. Feuillet; 1997) was produced as a cooperative project between the Biological Diversity of the Guianas Program (Smithsonian Institution; Washington; DC USA) and the ORSTOM Herbarium (Cayenne; French Guiana); under the auspices of the Centre for the Study of Biological Diversity (University of Guyana; Georgetown; Guyana). http://www.nmnh.si.edu/biodiversity/checklst.htm weed? (naturalised) [ online info ]

st data refers to regions where plant is an environmental weed] (environmental weed)

(naturalised, weed)

Green, P. (1994) NORFOLK ISLAND SPECIES LIST. In Flora of Australia, Vol.49, AGPS. Australian Biological Resources Study (Peter Green) (naturalised)

Henderson, L. (2001) Alien Weeds and Invasive Plants. Plant Protection Research Institute & Agricultural Research Council, South Africa. (noxious weed)

Holm, L. G., Pancho, J. V., Herberger, J. P. and Plucknett, D. L. (1979). A Geographical Atlas of World Weeds. John Wiley and Sons NewYork, USA (weed)

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)

John Hosking, NSW Department of Agriculture, Weed Database 30 April 2003 (agricultural weed, naturalised)

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

List XIE Yan, LI Zhenyu, William P. Gregg, LI Dianmo. 2000. Invasive Species in China -- An Overview. Biodiversity and Conservation 10(8): pp.1317-1341. (cultivation escape, naturalised)

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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!