Oogonium with thick oogonial wall, photo from Q-bank, used with permission
Photo Gallery
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P. ramorum oogonium  |
P. tentaculata disease symptoms on sticky monkey flower  Crown and root rot (left) on sticky monkey flower (Diplacus aurantiacus) compared with a control (right) |
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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Black pod disease of cacao  Symptom of black pod disease of cacao (T. cacao) caused by P. palmivora |
P. katsurae disease symptoms  Infected chestnut tree with girdling canker on stem |
P. ramorum colony morphology on CMA PARP  P. ramorum colony morphology on CMA PARP |
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P. pluvialis on Pinus radiata in New Zealand  Lesions consistent with the presence of red needle cast disease are more abundant at the base of Pinus radiata needles as indicated by the arrow. |
P. lateralis sporangia  Sympodial sporangiophore with external proliferation |
Phytophthora chlamydospora sporangium  Phytophthora chlamydospora sporangia in water, showing internal proliferation. Bar is 20 µm. |
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P. cambivora oogonium  Bullate oogonium with amphyginous antheridium |
Growth of P. megakarya on corn meal agar
 Growth of P. megakarya on corn meal agar |
P. pinifolia on Pinus radiata  Pinus radiata, note Infected needles at right angles to stem |