Grey alder (A. incana) with collar rot caused by P. alni
Photo Gallery
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P. alni canker on gray alder  |
P. siskiyouensis bleeding canker  Close-up of margin area of bole lesions under the bark of a bleeding canker |
P. pluvialis on Pinus radiata in New Zealand  A Pinus radiata needle showing faded olive- or khaki- coloured lesions consistent with the presence of red needle cast disease. Arrow shows resinous bands within the extended olive lesion. |
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Comparative gametangial morphology of Phytophthora Clade 5 species  Comparative gametangial morphology of Phytophthora Clade 5 species, with SEM (top) and light microscopy (bottom). P. heveae has smooth walled oogonia with funnel-shaped, amphigynous antheridia. P. agathidicida has mildly stipulate oogonia with globose amphigynous antheridia. P.cocois has mildly bullate oogonia with reflexed amphigynous antheridia. P. castaneae has coarsely bullate oogonium with rugose protuberances and narrow amphigynous antheridia (Weir et al. 2015). |
P. cactorum bleeding canker  Bleeding canker on European beech (Fagus sylvatica) |
P. cactorum bleeding canker  Bleeding canker on red oak (Quercus rubra) |
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P. siskiyouensis colony morphology on PDA  Colony morphology on PDA at 14 days |
P. austrocedrae - hyphal swellings  Morphology of hyphae of Phytophthora austrocedrae, from Greslebin et al. 2007 |
Sporangia showing ovoid and ovoid to spherical shape and papillate condition sporangia  Sporangia showing ovoid and ovoid to spherical shape and papillate condition |
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Vehicle washing  Truck washing to avoid spread of P. lateralis |
P. cambivora on dead and dying chinquapin  Dead and dying chinquapin infected with P. cambivora |
P. alni in riparian alder, Germany  P. alni in riparian alder, Germany |