Broadly ovoid, papillate sporangia in water
Photo Gallery
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P. pseudotsugae sporangia  |
Mal del ciprés, dead and dying trees along river  Mal del ciprés, dead and dying trees along river |
P. alni lesion in alder, Illwald, France  P. alni lesion in alder, Illwald, France |
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P. alni canker on gray alder  Grey alder (A. incana) with collar rot caused by P. alni |
P. megasperma oogonium  Oogonium with paragynous antheridia applied close to the ogonial stalk. |
P. siskiyouensis sporangia  Sporangia showing a variety of shapes and orientations of semi-papillae and sporangiophores |
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P. siskiyouensis canker on Italian alder  Bleeding canker at the base of a tree and a sprinkler emitter (arrow) adjacent to the trunk |
P. siskiyouensis oogonium with amphigynous antheridium  P. siskiyouensis oogonium with amphigynous antheridium |
P. frigida chlamydospore  Globose chlamydospores of P. frigida |
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P. nemorosa colony morphology on V8  Colony morphology on V8 at 14 days |
Basal canker on Port-Orford cedar  Basal canker on Chamaecyparis lawsoniana |
Port Orford cedar seedlings  Raised beds for testing disease resistance of Port-Orford-cedar seedlings at the Dorena Genetic Resource Center |