Colony morphology on V8 at 14 days
Photo Gallery
P. siskiyouensis colony morphology on V8 |
P. pseudotsugae colony morphology on V8 P. pseudotsugae colony growth on V8 agar |
P. cambivora sporangium Ovoid non-papillate sporangia with well-rounded base |
P. pinifolia on Pinus radiata needles Pinus radiata needles, note “black line” symptom near needle bases |
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. |
P. pinifolia on Pinus radiata Pinus radiata, note grey and collapsed needle bases |
P. boehmeriae symptoms Symptoms of gummosis on black wattle (Acacia mearnsii) |
P. cambivora colony morphology on PDA Appressed colony morphology at 14 days at 20°C on PDA |
P. cambivora disease symptoms Dead and dying chinquapin infected with P. cambivora |
P. chlamydospora chlamydospore Phytophthora chlamydospora chlamydospore in agar. Bar is 20µm. |
Healthy Port Orford Cedar tree Healthy Chamaecyparis lawsoniana tree |
P. pluvialis on Pinus radiata in New Zealand A stand of Pinus radiata trees affected by red needle cast disease. Note that frequently only the lower part of the crown is affected. |