Red needle cast symptoms on Douglas-fir in western Oregon, 2015
Photo Gallery
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P. pluvialis symptoms on Douglas-fir  |
P. agathidicia sporangia  Differentiation of the cytoplasm within papillate sporangia into acid fuchsin stained zoospores |
P. boehmeriae chlamydospore  Globose chlamydospore of P. boehmeriae |
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P. cactorum oogonium  Oogonium with paragynous antheridia close to oogonial stalk. Oospores are slightly aplerotic. |
P. nemorosa sporangium  Ovoid, semi-papillate sporangium showing medium length pedicel. |
P. cambivora colony morphology on PDA  Colony morphology on PDA at 14 days |
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P. pinifolia sporangia  Sporangium with internal proliferation, photo from Q-bank, used with permission. |
P. frigida chlamydospore  Globose chlamydospores of P. frigida |
Chlamydospore of P. lateralis  Terminal chlamydospore on a short side stalk |
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P. kernoviae colony morphology on V8  Colony morphology at 7 days at 18°C on V8, photo from Q-bank, used with permission. |
P. tentaculata chlamydospore  P. tentaculata chlamydospore with short hyphal projection |
P. pluvialis on Pinus radiata  A Pinus radiata needle showing black resinous bands or marks consistent with the presence of red needle cast disease. |