Bullate oogonium and and two-celled amphigynous antheridium
Photo Gallery
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P. cambivora oogonium  |
P. lateralis on Port Orford cedar  Collar lesion on Chaemacyparis lawsoniana in Landrévarzec, France |
P. cambivora disease symptoms  Dead and dying chinquapin infected with P. cambivora |
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P. siskiyouensis disease symptoms on Italian alder  Phytophthora collar rot on Italian alder trees: standing, dead tree |
P. lateralis on Port Orford cedar  Dying Chaemacyparis lawsoniana trees in Lopérec, France. |
P. palmivora symptoms on fruit  Brown rot on a lemon fruit caused by Phytophthora palmivora. |
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P. pinifolia on Pinus radiata needles  Pinus radiata needles, note “black line” symptom near needle bases |
P. pluvialis symptoms on Douglas-fir  Red needle cast symptoms on Douglas-fir in western Oregon, 2015 |
P. siskiyouensis sporangium  P. siskiyouensis sporangium with lateral semi-papilla and subterminal, sub-basal insertion in the sporangiophore |
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P. austrocedrae hyphal swellings  Hyphal swelling photo used with permission from Q-bank |
P. kernoviae leaf wilt  Wilted leaf of infected rhododendron |
P. agathidicia sporangia  Differentiation of the cytoplasm within papillate sporangia into acid fuchsin stained zoospores |