Aplerotic oogonia of P. arenaria with paragynous antheridia. Scale bar = 20 μm
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P. arenaria oogonium |
P. cambivora disease symptoms Ink disease impact in sweet chestnut forest in Italy |
P. cambivora colony morphology on V8 Colony morphology on V8 at 14 days |
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P. ramorum colony morphology on PDA P. ramorum colony morphology on PDA |
Tāne Mahuta “Lord of the Forest” kauri tree Tāne Mahuta “Lord of the Forest” is a giant kauri tree (approximately 47 metres in height) in the Waipoua Forest of Northland Region, New Zealand. Its age is unknown but is estimated to be between 1,250 and 2,500 years |
P. cambivora inactive lesion on chinquapin Inactive lesion of P. cambivora on chinquapin |
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P. kernoviae leaf wilt Wilted leaf of infected rhododendron |
Port Orford cedar seedlings Raised beds for testing disease resistance of Port-Orford-cedar seedlings at the Dorena Genetic Resource Center |
P. alni oogonia Smooth-walled oogonium of P. alni (Swedish variant) with oospore and amphigynous antheridium. |
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P. pluvialis - appearance of new growth Tufted appearance of new growth from surviving buds on Douglas-fir, one year after defoliation. |
P. austrocedrae colony morphology on Tomato juice agar Colony morphology of P. austrocedrae at 16 ºC after 4 weeks on Tomato juice agar |
P. katsurae sporangia Papillate, non-caducous sporangium with differentiated content; photo used with permission from Q-bank |


