Bleeding canker on European beech (Fagus sylvatica)
Photo Gallery
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P. cactorum bleeding canker  |
P. frigida symptoms 3  Black wattle bark with symptoms of gummosis |
P. palmivora sporangia  Sporangia (sporangiospores) showing sympodial branching |
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P. pseudotsugae colony morphology on PDA  P. pseudotsugae colony growth on PDA agar |
P. chlamydospora sporangium  Phytophthora chlamydospora sporangium in water. Bar is 20µm. |
P. siskiyouensis sporangium  P. siskiyouensis sporangium with lateral semi-papilla and subterminal, sub-basal insertion in the sporangiophore |
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P. pluvialis on Pinus radiata needle  Clusters of sporangia emerge from stomata of an infected radiata pine needle. |
P. pluvialis on Pinus radiata in New Zealand  A stand of Pinus radiata trees affected by red needle cast disease. Note the reddish appearance of affected trees prior to needle drop. |
P. pseudotsugae amphigynous oogonium  P. pseudotsugae oogonium with amphigynous antheridia |
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P. ramorum zoospores  Sporangium of P. ramorum releasing zoospores |
P. cactorum bleeding canker  Bleeding canker on European beech (Fagus sylvatica) |
P. ramorum on larch in the United Kingdom  Larch trees with P. ramorum in the UK |