‘Blistered’ hyphal swellings in agar
Photo Gallery
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P. nemorosa hyphal swellings  |
P. siskiyouensis bleeding canker  Close-up of margin area of bole lesions under the bark of a bleeding canker |
P. austrocedrae colony morphology on Tomato juice agar  Colony morphology of P. austrocedrae at 16 ºC after 4 weeks on Tomato juice agar |
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P. frigida oogonium  Oogonium and oospore with amphigynous antheridium |
Growth of P. megakarya on PDA  Growth of P. megakarya on potato dextrose agar |
P. pluvialis symptoms on Douglas-fir  Red needle cast symptoms on Douglas-fir in western Oregon, 2015 |
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P. austrocedrae colony morphology on PDA  Colony morphology of P. austrocedrae at 16 C after four weeks on PDA |
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). |
P. palmivora sporangia
 P. palmivora caducous papillate sporangia
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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. agathidicida sporangium  Globose to ovoid-ellipsoid, papillate sporangium |
P. alni in alder, Illwald, France  P. alni in alder, Illwald, France |