P. alni in riparian alder, Scotland
Photo Gallery
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P. alni in riparian alder, Scotland  |
P. tentaculata oospores and antheridia  Paragynous antheridium attached to oogonium with oospore |
P. megasperma colony morphology on V8  Colony morphology on V8 at 7 days |
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P. cinnamomi on Fraser fir  Frasier fir Christmas trees, North Carolina |
P. katsurae sporangia  Papillate, non-caducous sporangium with differentiated content; photo used with permission from Q-bank |
P. cinnamomi cork oak decline  Cork oak decline, Portugal |
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P. cambivora oogonium  Bullate oogonium and and two-celled amphigynous antheridium |
P. pluvialis on Pinus radiata in New Zealand  Typical red needle cast symptoms along a twig. Lesions begin at the base of the needle which subsequently turns brown and is cast from the twig. |
P. boehmeriae oogonium  Oogonia and oospores with amphigynous antheridia |
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P. pinifolia colony morphology on PDA  Colony pattern after 7 days on PDA at 24C, photo from Q-bank, used with permission. |
P. agathidicida oospores  Oospores of P. agathidicida in the roots of kauri seedlings inoculated with P. agathidicida. The root has been cleared with potassium hydroxide and bleached with peroxide, before being stained with Trypan Blue |
P. siskiyouensis canker on Italian alder  Bole lesions in the tissues under the bark of a bleeding canker: distinct margin between healthy and disease tissues |