sudden oak death: Phytophthora ramorum (Peronosporales: Peronosporaceae) - Nonnative Invasive Species in Southern Forest and Rangeland Ecosystem

sudden oak death
Phytophthora ramorum S. Werres, A.W.A.M. de Cock

Identification, Biology, Control and Management Resources

Selected Images from Invasive.org

Sign; P. ramorum zone lines on coast live oak. Joseph O'Brien, USDA Forest Service, Bugwood.org Additional Resolutions & Image Usage	Symptoms; This leaf was confirmed as positive for P. ramorum by Jenny Davidson. Joseph O'Brien, USDA Forest Service, Bugwood.org Additional Resolutions & Image Usage	Symptoms; Joseph O'Brien, USDA Forest Service, Bugwood.org Additional Resolutions & Image Usage	Symptoms; Tip dieback symptoms caused by P. ramorum on tanoak. Joseph O'Brien, USDA Forest Service, Bugwood.org Additional Resolutions & Image Usage
Sign; Signs of bleeding caused by P. ramorum infection on lichen-covered bark of coast live oak. Joseph O'Brien, USDA Forest Service, Bugwood.org Additional Resolutions & Image Usage	Symptoms; Joseph O'Brien, USDA Forest Service, Bugwood.org Additional Resolutions & Image Usage