Bark discoloration and zone lines in coast live oak (Quercus agrifolia)
Photo Gallery
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P. ramorum canker  |
P. cactorum bleeding canker  Bleeding canker on red oak (Quercus rubra) |
P. palmivora symptoms on fruit  Brown rot on a lemon fruit caused by Phytophthora palmivora. |
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P. ramorum sporangium  P. ramorum sporangium |
P. siskiyouensis colony morphology on PDA  Colony morphology on PDA at 14 days |
Phytophthora cactorum disease symptoms on English walnut  Mortality of Juglans regia caused by Phytophthora cactorum. |
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P. pinifolia sporangia  Sporangium with internal proliferation, photo from Q-bank, used with permission. |
P. frigida sporangia  Noncaducous sporangia showing ovoid shape and papillate condition |
P. cryptogea colony morpholgy on PDA  Colony morphology on PDA at 14 days |
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P. palmivora oogonium  P. palmivora oogonium |
Growth of P. arenaria on CA  Colony morphology of Phytophthora arenaria after 7 days at 20°C on carrot agar |
P. kernoviae colony morphology on CMA PARPH  Organism grown on CMA PARP[H]; Plant disease 70, 1038-1043 |