P. pluvialis hyphal swellings on agar
Photo Gallery
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P. pluvialis hyphal swellings  |
P. pluvialis oogonium and antheridium  Oogonium and oospore with amphigynous antheridium |
P. pluvialis - appearance of new growth  Tufted appearance of new growth from surviving buds on Douglas-fir, one year after defoliation. |
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P. pluvialis colony morphology on carrot agar  Colony morphology on carrot agar at 20 days |
P. pluvialis on Pinus radiata in New Zealand  Lesions consistent with the presence of red needle cast disease are more abundant at the base of Pinus radiata needles as indicated by the arrow. |
P. pluvialis sporangium  Sporangium showing typical ovoid shape and semi-papillate condition |
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P. pluvialis colony morphology on carrot agar  Colony morphology on carrot agar at 20 days |
P. pluvialis on Pinus radiata needle  Clusters of sporangia emerge from stomata of an infected radiata pine needle. |
P. pluvialis oogonium and antheridium  Oogonium and oospore with amphigynous antheridium |
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P. pluvialis symptoms on Douglas-fir  Red needle cast symptoms on Douglas-fir in western Oregon, 2015 |
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. |
P. pluvialis sporangium  Sporangia showing typical ovoid shape and semi-papillate condition |