External lesion; 14 November 2003
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P. kernoviae disease on beech  |
Mal del ciprés, dead and dying trees along river  Mal del ciprés, dead and dying trees along river |
P. pluvialis on Pinus radiata in New Zealand  A Pinus radiata needle showing faded olive- or khaki- coloured lesions consistent with the presence of red needle cast disease. Arrow shows resinous bands within the extended olive lesion. |
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P. cambivora sporangium  Ovoid non-papillate sporangia with well-rounded base |
P. cambivora oogonium  Bullate oogonium and and two-celled amphigynous antheridium |
P. palmivora chlamydospore  Terminal chlamydospore of P. palmivora |
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P. tentaculata sporangium  Papillate sporangium of P. tentaculata |
P. arenaria sporangia  Typical ovoid papillate sporangia of Phytophthora arenaria on V8 agar flooded with soil extract |
P. tentaculata microscopic characteristics  Hyphal swellings occuring at branching points of Mycelium (A), Intercalary hyphal swellings (B), Chlamydospore (C ), Sporangia (D) |
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P. pluvialis sporangium  Sporangium showing typical ovoid shape and semi-papillate condition |
P. pluvialis sporangia.  P. pluvialis sporangia on tape peel from infected Douglas-fir needle. |
P. cinnamomi colony morphology on PDA  P. cinnamomi colony growth on PDA at 14 days |