Typical ovoid papillate sporangia of Phytophthora arenaria on V8 agar flooded with soil extract
Photo Gallery
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P. arenaria sporangia  |
P. pinifolia hyphal swellings  Spherical hyphal swelling with radiating hyphae (from Duran et al. 2008). Scale bar = 20 μm. |
P. alni lesion in alder, Illwald, France  P. alni lesion in alder, Illwald, France |
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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. cambivora colony morphology on PDA  Uniform fluffy colony morphology at 14 days at 20°C on PDA |
P. megasperma oogonium  Oogonium with paragynous antheridia applied close to the ogonial stalk. |
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P. cinnamomi on Banksia  Death of woodland Banksia, Western Australia |
P. ramorum chlamydospores  P. ramorum chlamydospores |
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. |
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P. megasperma colony morphology on PDA  Colony morphology on PDA at 7 days |
P. tentaculata oospores and antheridia  Paragynous antheridium attached to oogonium with oospore |
P. siskiyouensis sporangia  Sporangia showing a variety of shapes and orientations of semi-papillae and sporangiophores |