Pinus radiata needles, note “black line” symptom near needle bases
Photo Gallery
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P. pinifolia on Pinus radiata needles  |
P. tentaculata disease symptoms on California mugwort  Outplanted California mugwort (Artemisia douglasiana) infected with P. tentaculata, 4.5 years after planting. Plant shows stunting and chlorosis. (P. cryptogea and P. lacustris were also baited from roots/soil of this plant). |
P. pinifolia on Pinus radiata  Pinus radiata, note grey and collapsed needle bases |
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P. cambivora tar spots  Tar spots on European beech (Fagus sylvatica) with bark removed. Lesse, Germany |
P. cactorum oogonium  Oogonium with paragynous antheridia close to oogonial stalk. Oospores are slightly aplerotic. |
P. siskiyouensis disease symptoms on Italian alder  Phytophthora collar rot on Italian alder trees: standing, dead tree |
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P. pseudosyringae colony morphology on V8  Colony morphology on V8 at 14 days |
P. agathidicida lesion on kauri tree  Gum oozing out of longitudinal lesion |
P. palmivora colony morphology on V8  Growth of P. palmivora on V8 agar |
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P. pinifolia sporangia  Non- papillate and caducous sporangia of Phytophthora pinifolia isolated from the infected P. radiata needles. |
P. ramorum sporangia and chlamydospores  Sporangia and chlamydospores of P. ramorum |
P. pseudosyringae oogonium  Oogonium with paragynous antheridium in agar |