Information Resources for Weed Risk Assessment

Herbaria with (some) collection data online

• Harvard Herbaria Databases  Searchable for American type specimens, etc.
• USDA PLANTS National Database   Distribution in the USA by State
• Flora of Texas Consortium   Specimen data from university herbaria in Texas
• PERTH herbarium  Database of names accessible with free registration; other information including all specimen details available for a price
• Australian National Botanic Garden and its botanical databases
• Catalogue of Type Specimens in the Ottowa Herbarium (DAO)
• Linnean Herbarium at the Swedish Museum   Images of some of Linnaeus' type specimens
• Kew Databases  Not much online yet
• Smithsonian Institution botany databases: specimens; taxonomic

Checklists of plant names

• Index Nominum Genericorum  Searchable index of all published names of plant genera.
• W3Tropicos  Searchable database of plant names (Global).
• Australian Plant Name Index  Searchable database of plant names (Australia only).
• Census of Plants in Australian Botanic Gardens an unsorted compilation of each botanic garden's inventories
• Search the Flora Europaea
• Flora of China checklists   at Missouri Botanic gardens
• IUCN Red List   A weed in one country may be a threatened species in another

Lists of Pest Plants

• USDA APHIS Pest Plant Lists
• Weeds Australia Database  Lists of noxious weeds for each Australian State.

Contact details of plant taxonomists

• Index Herbariorum  Searchable database of herbaria and their personel with contact information.

Herbicide resistance

• International Survey of Herbicide-Resistant Weeds  Ian Heap's lists of herbicide-resistant weeds; frequently updated

Biological Control

• ARC-Plant Protection Research Institute  South Africa
• CSIRO Invasive Plants
• AQIS - Protocol for biocontrol agents
• Alberta Research Council

Weeds Pages

• Weed Science Group, Agriculture WA  Including a large and frequently updated list of links
• USDA APHIS Noxious Weeds Home Page
• Weeds in New Zealand (environmental weeds)
• Invasive Woody Plants in the Tropics
• The Nature Conservancy Wildland Weeds Management and Research Program
• Invasive Species Specialist Group
• Florida Exotic Pest Plant Council
• Tennessee Exotic Pest Plant Council
• Hawaiian Ecosystems at Risk project (HEAR) (info on alien plant species in Hawaii)
• Invasive Species in the Pacific (IUCN's Invasive Species Specialist Group online database)

General plant information sources

• Flowering Plants Gateway Index to pages dealing with families and genera
• Internet Directory for Botany A very large index for many botany-related sites
• Scott's botanical links A very large index for many botany-related sites

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