Infected chestnut tree with girdling canker on stem
Photo Gallery
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P. katsurae disease symptoms  |
P. kernoviae sporangium  Papillate and caducous sporangium, photo from Q-bank, used with permission |
P. nicotianae colony morphology on PDA  Phytophthora nicotianae CBS 321.49 PDA after 7 days at 24 degrees. Photo from Q-bank: www.q-bank.eu, Henk Brouwer (CBS-KNAW, Utrecht, The Netherlands) |
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P. siskiyouensis disease symptoms on Italian alder  Phytophthora collar rot on Italian alder trees: standing, dead tree |
P. cactorum bleeding canker  Bleeding canker on European beech (Fagus sylvatica) |
P. cactorum oogonium  Oogonium with paragynous antheridia close to oogonial stalk. Oospores are slightly aplerotic. |
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P. austrocedrae hyphal swellings  Hyphal swelling photo used with permission from Q-bank |
P. pseudotsugae sporangia  Broadly ovoid, papillate sporangia in water |
P. lateralis sporangia  Sympodial sporangiophore with external proliferation |
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P. kernoviae canker  Bole lesion on Fagus sylvatica |
P. cambivora oogonium  P. cambivora oogonium with antheridium |
P. cinnamomi on Fraser fir  Frasier fir Christmas trees, North Carolina |