Dead Banksia sp. in a Kwongan heathland on mineral sand near Eneabba, Western Australia recently killed by root and collar rot caused by Phytophthora arenaria
Photo Gallery
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P. arenaria disease symptoms on Banksia  |
P. arenaria oogonium  Aplerotic oogonia of P. arenaria with paragynous antheridia. Scale bar = 20 μm |
Port Orford Cedar Hedge row  Chamaecyparis lawsoniana residential hedge row with alive and dead trees |
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P. lateralis on Port Orford cedar  Lesion caused by aerial infection on Chaemacyparis lawsoniana in Lopérec, France |
P. pinifolia on Pinus radiata  Pinus radiata, note Infected needles at right angles to stem |
P. lateralis on Port Orford Cedar  Horticultural planting of Port-Orford cedar, photo from USDA Forest Service, Dorena Genetic Resource Center |
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P. agathidicida lesion on kauri tree  Gum oozing out of longitudinal lesion |
P. alni subsp alni sporangium  Non-papillate, non caducous sporangium, photo used with permission from Q-bank |
P. pinifolia sporangium  Cysts remain in sporangium after discharge, photo from Q-bank, used with permission |
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P. tentaculata sporangium  Papillate sporangium of P. tentaculata |
Phytophthora chlamydospora sporangium  Phytophthora chlamydospora sporangia in water, showing internal proliferation. Bar is 20 µm. |
P. kernoviae sporangia  Mycol.Res 109, 853-859; Figs 18-22. Regular, ovoid limoniform sporangia. Figs 23-26. Asymmetrical or sporangia |