Oogonium with paragynous antheridia close to oogonial stalk. Oospores are slightly aplerotic.
Photo Gallery
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P. cactorum oogonium  |
P. pinifolia sporulation  Sporulation on edge of hemp seed, photo from Q-bank, used with permission. |
P. cactorum bleeding canker  Bleeding canker on European beech (Fagus sylvatica) |
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P. austrocedrae semipapillate sporangium  P. austrocedrae - semipapillate sporangium with off-center attachment. |
P. frigida symptoms 2  Symptoms of gummosis on black wattle |
P. ramorum on larch in the United Kingdom  Larch trees with P. ramorum in the UK |
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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. tentaculata chlamydospore  Terminal chlamydospore of P. tentaculata |
P. pinifolia on Pinus radiata needles  Pinus radiata needles, note “black line” symptom near needle bases |
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P. katsurae growth morphology on β-CMA  Growth morphology at 7 days on β-CMA |
P. agathidicida lesion on kauri tree  Advancing triangular lesion extending up the trunk of an 80 cm DBH kauri tree in the Huia Dam Site along Twin Peaks Track, Waitakere Regional Park |
P. pinifolia coenocytic hyphae  Coenocytic hyphae (from Duran et al. 2008). Scale bar = 20 μm. |