Carolinas Beach Vitex Task Force.
Hawaiian Ecosystems at Risk; Charles Darwin Foundation; Galapagos National Park; Ecuadorian Agricultural Health Service in Galapagos; Galapagos National Institute.
North Carolina Department of Agriculture and Consumer Services. Plant Industry Division. Plant Protection Section.
New York City Department of Health.
Instituto Hórus de Desenvolvimento e Conservação Ambiental (Horus Institute of Environmental Development and Conservation, Brazil).
Special Note: Site in Portuguese and Spanish
Reef Environmental Education Foundation.
Universidad de Concepción (Chile).
Special Note: In Spanish
New York Invasive Species Clearinghouse.
Cornell University. Forest Health and Invasive Non-native Forest Pests.
North Carolina Invasive Plant Council.
New York State Department of Environmental Conservation.
New York Department of Environmental Conservation.
Cornell University. New York State Integrated Pest Management Program.
North Carolina Department of Agriculture and Consumer Services.
New York State Department of Agriculture and Markets.
North Carolina State University. College of Agriculture and Life Sciences.
Pan American Health Organization; Regional Office for The Americas of the World Health Organization.