Phytophthora chlamydospora sporangia in water, showing subsporangial elongation. Bar is 20 µm.
Photo Gallery
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P. chlamydospora sporangium  |
P. megasperma oogonium  Oogonium with paragynous antheridia applied close to the ogonial stalk. |
P. katsurae sporangia  Papillate, non-caducous sporangia; photo used with permission from Q-bank |
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P. pluvialis on Pinus radiata in New Zealand  Typical red needle cast symptoms along a twig. Lesions begin at the base of the needle which subsequently turns brown and is cast from the twig. |
P. cambivora sporangium with internal extended proliferation  Empty sporangia showing internal extended proliferation |
P. cactorum bleeding canker  Bleeding canker on European beech (Fagus sylvatica) |
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P. pluvialis symptoms on Douglas-fir  Red needle cast symptoms on Douglas-fir in western Oregon, 2015 |
P. megakarya sporangia (photo from Q-bank, used with permission).  P. megakarya sporangia |
P. cinnamomi on Banksia  Dead and dying Banksia, Western Australia |
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P. pseudotsugae sporangium  Broadly ovoid, papillate sporangium in water |
P. pinifolia on Pinus radiata  Pinus radiata needles, note “black line” symptom near needle bases |
P. katsurae sporangia  Papillate, non-caducous sporangium with differentiated content; photo used with permission from Q-bank |