‘Blistered’ hyphal swellings in agar
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P. nemorosa hyphal swellings  |
P. pinifolia hyphal growth  P. pinifolia pathogen growing from infected needle on selective agar |
P. siskiyouensis bleeding canker  Bole lesions in the tissues under the bark of a bleeding canker: discoloration in the secondary phloem tissue |
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P. austrocedrae - Mal del ciprés, stages of decline  Mal del ciprés, stages of decline |
P. chlamydospora colony morphology on carrot agar  P. chlamydospora colony morphology on carrot agar |
P. pinifolia on Pinus radiata  Pinus radiata, note Stem canker associated with necrotic needles. |
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P. megasperma sporangia  Ovoid, non-papillate sporangia showing internal proliferation of sporangiophore |
P. pluvialis sporangium  Sporangia showing typical ovoid shape and semi-papillate condition |
P. boehmeriae oogonia  Oogonia and oospores with amphigynous antheridia |
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P. lateralis on Port Orford cedar  Bole lesion on Chaemacyparis lawsoniana in Lopérec, France |
Basal canker on Port Orford Cedar stump  |
P. tentaculata chlamydospore  P. tentaculata chlamydospore with short hyphal projection |