P. ramorum sporangium
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P. ramorum sporangium |
Mat to control spread of P. agathidicida Jogger running over a plastic-reinforced, foam-mat containing a 2% solution of Trigene™ Advance (quaternary ammonium compound) as part of a cross-country event, in the Waitakere Regional Park |
P. agathidicia sporangia Differentiation of the cytoplasm within papillate sporangia into acid fuchsin stained zoospores |
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P. pluvialis symptoms Symptoms of red needle cast on Douglas-fir needles |
P. pinifolia on Pinus radiata Dead needles on lower side of P. radiata branch. |
P. tentaculata disease symptoms on sticky monkey flower Crown and root rot (left) on sticky monkey flower (Diplacus aurantiacus) compared with a control (right) |
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P. palmivora oogonia P. palmivora oogonia with antheridia |
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. |
P. cactorum colony morphology on V8 Colony morphology on V8 at 14 days |
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P. tentaculata sporangium Papillate sporangium of P. tentaculata |
Phytophthora taxon Agathis bole canker Canker on a Kauri tree, New Zealand |
P. austrocedrae - Mal del ciprés, stages of decline Colony morphology of P. austrocedrae at 16 C after four weeks on PDA |


