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).
Photo Gallery
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P. tentaculata disease symptoms on California mugwort  |
P. pinifolia colony morphology on V8  Colony morphology of P. pinifolia at 20°C on V8 after 3 weeks. From Duran et al. 2008 |
P. lateralis on Port Orford cedar  Root lesions on Chaemacyparis lawsoniana |
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P. agathidicia disease symptoms on kauri  Crown decline of mature kauri, with branchlets with little or no leaves |
P. pluvialis symptoms on Douglas-fir  P. pluvialis symptoms of red needle cast on Douglas-fir, western Oregon 2015 |
P. katsurae oogonia  Oogonia with ornamentation |
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P. pinifolia sporangium  Cysts remain in sporangium after discharge, photo from Q-bank, used with permission |
Dying Port Orford Cedar trees  |
P. chlamydospora colony morphology on V8 agar  P. chlamydospora colony morphology on V8 agar |
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P. siskiyouensis bleeding canker  Close-up of margin area of bole lesions under the bark of a bleeding canker |
P. cactorum oogonium  Oogonium with paragynous antheridia close to oogonial stalk. Oospores are slightly aplerotic. |
P. megasperma oogonium  Oogonium with paragynous antheridia applied close to the ogonial stalk. |