Oogonia and oospores with amphigynous antheridia
Photo Gallery
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P. boehmeriae oogonium  |
P. boehmeriae sporangium  Sporangium showing ovoid and ovoid to spherical shape and papillate condition |
P. pseudotsugae paragynous oogonium  P. pseudotsugae oogonium with paragynous antheridia, note the disrupted contents of the abortive oogonia |
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P. lateralis sporangia  Sympodial sporangiophore with external proliferation |
P. cactorum sporangia  Broadly ovoid, papillate sporangia in water. |
P. ramorum sporangia and chlamydospores  Sporangia and chlamydospores of P. ramorum |
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P. pseudosyringae oogonium  Oogonium with paragynous antheridium in agar |
P. siskiyouensis bleeding canker  Bole lesions in the tissues under the bark of a bleeding canker: discoloration in the secondary phloem tissue |
P. lateralis on Port Orford cedar  Dying Chaemacyparis lawsoniana trees in Lopérec, France. |
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P. alni in riparian alder, Scotland  P. alni in riparian alder, Scotland |
P. pinifolia on Pinus radiata  Pinus radiata needles, note “black line” symptom near needle bases |
P. agathadicida disease symptom  Excavated lesion, with outer bark removed showing extent of disease-front |