Culture Collections

American Type Culture Collection (ATCC)
Canadian Collection of Fungal Cultures (DAOMC)
Centraalbureau voor Schimmelcultures
Common Plant Diseases from SimplyGardenFurniture
Database of Agriculturally Important Fungi (USDA-ARS)
Fungal Databases (with links)
Internet Directory for Botany
Texas Plant Disease Handbook
Univ.Alberta Microfungus Collection & Herbarium (UAMH)

Government Agencies

Natural Resources Canada

Forest Pathology in Canada.
English: http://www.nrcan.gc.ca/forests/insects-diseases/13361
Francais: http://www.rncan.gc.ca/forets/insectes-maladies/13362

International Agencies

Commonwealth Agricultural Bureau International (CABI)  
Food & Agriculture Organization (FAO)
United Nations (UN)

Government of Canada

Government of Canada  – Including access to electronic and internet directories

Regulatory Agencies

Pest Management Regulatory Agency (PMRA)
PMRA Label Search  
USA Environmental Protection Agency (EPA)

Canadian Food Inspection Agency / Agence Canadienne d’Inspection des Aliments

CFIA

USDA Animal and Plant Health Inspection Service

APHIS USDA

Molecular Plant Pathology Resources

National Genetic Resources Guide
National Center for Biotechnology Information (NCBI)
European Molecular Biology Laboratory (EMBL)
DNA Databank of Japan (DDBJ)