P. pluvialis symptoms of red needle cast on Douglas-fir, western Oregon 2015
Photo Gallery
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P. pluvialis symptoms on Douglas-fir  |
P. agathidicia oogonia  Light micrograph of P. agathidicida oospore (Scale bar equals 15 µm) |
P. alni symptoms on European Alder  Mature, riparian common alder (A. glutinosa) stand with high impact of Phytophthora root and collar rot. |
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P. ramorum zoospores  Sporangium of P. ramorum releasing zoospores |
P. cactorum sporangia  Broadly ovoid, papillate sporangia in water. |
P. katsurae disease symptoms  Infected chestnut (Castanea) with girdling canker |
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P. tentaculata disease symptoms on California mugwort  Outplanted California mugwort (Artemisia douglasiana) infected with P. tentaculata, 4.5 years after planting. Plant shows stunting and chlorosis. (P. cryptogea and P. lacustris were also baited from roots/soil of this plant). |
P. cambivora sporangium  Ovoid non- papillate sporangia |
Basal canker on Port Orford Cedar stump  |
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P. cambivora active lesion on chinquapin  P. cambivora active lesion on chinquapin |
P. nicotianae chlamydospore  Globose chlamydospore (Fitopatol. bras. 2005) |
P. megasperma oogonium  Oogonium with paragynous antheridia applied close to the ogonial stalk. |