Photo Gallery

P. siskiyouensis bleeding canker Close-up of margin area of bole lesions under the bark of a bleeding canker	P. cambivora on dead and dying chinquapin Dead and dying chinquapin infected with P. cambivora	P. pseudosyringae oogonium Oogonium with paragynous antheridium in agar
P. pseudosyringae colony morphology on V8 Colony morphology on V8 at 14 days	P. lateralis on Port Orford cedar Collar lesion on Chaemacyparis lawsoniana in Landrévarzec, France	P. pseudotsugae colony morphology on V8 P. pseudotsugae colony growth on V8 agar
P. lateralis on Port Orford cedar Atypical decline caused by aerial infections in Scaër, France	P. cryptogea sporangia Sporangiophore showing internal proliferation through empty sporangia after zoospore release	P. tentaculata disease symptoms on California mugwort Outplanted California mugwort (Artemisia douglasiana) infected with P. tentaculata, 4.5 years after planting. Plant shows stunting and chlorosis. (P. cryptogea and P. lacustris were also baited from roots/soil of this plant).
P. pluvialis symptoms on Douglas-fir P. pluvialis symptoms of red needle cast on Douglas-fir, western Oregon 2015	P. alni symptoms on European Alder Mature, riparian common alder (A. glutinosa) stand with high impact of Phytophthora root and collar rot.	P. alni oogonia subspecies and variants Fig. 40. P. alni subsp. uniformis. Fig. 41. P. alni subsp. multiformis German variant. Fig. 42. P. alni subsp. alni. Fig. 43.