P. alni basal canker on European Alder (Alnus glutinosa)
Photo Gallery
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P. alni basal canker on European Alder  |
P. cryptogea hyphal swellings  Cluster of small, angular to globose hyphal swellings formed in water |
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). |
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P. cryptogea sporangia  Sporangiophore showing internal proliferation through empty sporangia after zoospore release |
P. cryptogea sporangium  Ovoid non-papillate sporangia in water. |
P. cinnamomi on Fraser fir  Frasier fir Christmas trees, North Carolina |
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Growth of P. arenaria on MEA  Colony morphology of Phytophthora arenaria after 7 days at 20°C on malt extract agar |
P. alni symptoms on European Alder  Mature, riparian common alder (A. glutinosa) stand heavily impacted by root and collar rot caused by P. alni |
Mal del ciprés, dead and dying trees along river  Mal del ciprés, dead and dying trees along river |
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P. chlamydospora chlamydospore  Phytophthora chlamydospora chlamydospore in agar. Bar is 20µm. |
P. pluvialis on Pinus radiata in New Zealand  A stand of Pinus radiata trees affected by red needle cast disease. Note the reddish appearance of affected trees prior to needle drop. |
P. frigida sporangia  Noncaducous sporangia showing ovoid shape and papillate condition |