Mature, riparian common alder (A. glutinosa) stand heavily impacted by root and collar rot caused by P. alni
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P. alni symptoms on European Alder  |
P. austrocedrae oogonia drawing  P. austrocedrae. Morphology of oogonia, oospores and antheridia. Bar: 10 mm. Greslebin et al. 2007 |
P. pinifolia coenocytic hyphae  Coenocytic hyphae (from Duran et al. 2008). Scale bar = 20 μm. |
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Healthy Port Orford Cedar tree  Healthy Chamaecyparis lawsoniana tree |
P. cambivora colony morphology on PDA  Uniform fluffy colony morphology at 14 days at 20°C on PDA |
P. cactorum bleeding canker  Bleeding canker on European beech (Fagus sylvatica) |
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P. boehmeriae oogonia  Oogonia and oospores with amphigynous antheridia |
P. kernoviae leaf wilt  Wilted leaf of infected rhododendron |
P. alni in alder forest, Germany, with T. Jung  P. alni in alder forest, Germany, with T. Jung |
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P. ramorum Dieback and shoot blight on Grand fir  Dieback and shoot blight symptoms caused by P. ramorum on Abies grandis |
Growth of P. arenaria on MEA  Colony morphology of Phytophthora arenaria after 7 days at 20°C on malt extract agar |
P. siskiyouensis canker on Italian alder  Bleeding canker at the base of a tree and a sprinkler emitter (arrow) adjacent to the trunk |