Differentiation of the cytoplasm within papillate sporangia into acid fuchsin stained zoospores
Photo Gallery
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P. agathidicia sporangia  |
Chlamydospore of P. lateralis  Terminal chlamydospore on a short side stalk |
P. alni sporangia  Non-papillate sporangia of P. alni showing nested proliferation. |
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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. |
Phytophthora cactorum canker on beech tree  Canker on Fagus sp. caused by Phytophthora cactorum. |
P. pinifolia on Pinus radiata  Pinus radiata impacted by DFP, note healthy new growth |
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P. ramorum colony morphology on PDA  P. ramorum colony morphology on PDA |
P. pinifolia colony morphology on PDA  Colony pattern after 7 days on PDA at 24C, photo from Q-bank, used with permission. |
P. pluvialis on Pinus radiata in New Zealand  A stand of Pinus radiata trees affected by red needle cast disease. Note that frequently only the lower part of the crown is affected. |
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Chlamydospore of P. lateralis  Laterally intercalary chlamydospore of Phytophthora lateralis |
P. austrocedrae hyphal swellings in liquid media drawing  Morphology of hyphae of Phytophthora austrocedrae, from Greslebin et al. 2007 |
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. |