Bole lesions in the tissues under the bark of a bleeding canker: discoloration in the secondary phloem tissue
Photo Gallery
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P. siskiyouensis bleeding canker  |
P. cambivora on dead and dying chinquapin  Dead and dying chinquapin infected with P. cambivora |
P. tentaculata disease symptoms on California mugwort  Nursery grown California mugwort plant (Artemisia douglasiana) infected with P. tentaculata and exhibiting severe root and crown rot |
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P. tentaculata microscopic characteristics  Hyphal swellings occuring at branching points of Mycelium (A), Intercalary hyphal swellings (B), Chlamydospore (C ), Sporangia (D) |
P. cinnamomi on Fraser fir  Frasier fir Christmas trees, North Carolina |
P. cambivora colony morphology on MA  Appressed stellate colony morphology at 14 days at 20°C on MA |
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P. pluvialis symptoms  Symptoms of red needle cast on Douglas-fir needles |
P. nicotianae hyphal swelling  P. nicotianae hyphal swellings in water 100x. Photo from Q-bank: www.q-bank.eu, Henk Brouwer (CBS-KNAW, Utrecht, The Netherlands) |
P. alni subsp alni sporangium  Non-papillate, non caducous sporangium, photo used with permission from Q-bank |
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P. cambivora sporangium with internal extended proliferation  Empty sporangia showing internal extended proliferation |
P. palmivora oogonia  P. palmivora oogonia with antheridia |
P. megasperma colony morphology on PDA  Colony morphology on PDA at 7 days |