Dead Banksia sp. in a Kwongan heathland on mineral sand near Eneabba, Western Australia recently killed by root and collar rot caused by Phytophthora arenaria
Photo Gallery
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P. arenaria disease symptoms on Banksia  |
P. cactorum bleeding canker  Bleeding canker on red oak (Quercus rubra) |
P. palmivora symptoms on fruit  Brown rot on a lemon fruit caused by Phytophthora palmivora. |
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P. cambivora colony morphology on PDA  Cottony colony morphology at 14 days at 20°C on PDA |
P. arenaria sporangia  Typical ovoid papillate sporangia of Phytophthora arenaria on V8 agar flooded with soil extract |
P. megakarya disease symptoms on Theobroma cacao
Symptoms of black pod disease of cocoa (T. cacao)
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P. cryptogea sporangium  Obpyriform non-papillate sporangia in water |
P. megakarya disease symptoms on Theobroma cacao fruit  Disease symptoms on a cocoa pod |
Chlamydospore of P. lateralis  Laterally intercalary chlamydospore of Phytophthora lateralis |
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P. cactorum bleeding canker  Bleeding canker on red oak (Quercus rubra) |
P. pluvialis symptoms on Douglas-fir  Red needle cast symptoms on Douglas-fir in western Oregon, 2015 |
P. agathidicia disease symptoms on kauri  Crown decline of mature kauri, with branchlets with little or no leaves |