Broadly ovoid, papillate sporangia in water.
Photo Gallery
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P. cactorum sporangia  |
P. cactorum sporangia  P. cactorum sporangia |
P. cryptogea sporangia  Sporangiophore showing internal proliferation through empty sporangia after zoospore release |
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P. siskiyouensis canker on Italian alder  Bole lesions in the tissues under the bark of a bleeding canker: distinct margin between healthy and disease tissues |
P. austrocedrae irregular sporangium  P. austrocedrae - irregular sporangium with lateral attachment and swelling in sporangiophore |
P. pluvialis symptoms on Douglas-fir  Red needle cast symptoms on Douglas-fir in western Oregon, 2015 |
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P. austrocedrae hyphal swellings  Hyphal swelling photo used with permission from Q-bank |
P. chlamydospora sporangium  Phytophthora chlamydospora sporangium in water. Bar is 20µm. |
P. lateralis colony morphology on PDA  Growth morphology on PDA of Phytophthora lateralis |
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P. arenaria oogonium  Aplerotic oogonia of P. arenaria with paragynous antheridia. Scale bar = 20 μm |
P. chlamydospora sporangium  Phytophthora chlamydospora sporangium in water. Bar is 20µm. |
P. cinnamomi on Fraser fir  Frasier fir Christmas trees, North Carolina |