Sporulation on edge of hemp seed, photo from Q-bank, used with permission.
Photo Gallery
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P. pinifolia sporulation  |
P. nemorosa hyphal swellings  ‘Blistered’ hyphal swellings in agar |
P. pinifolia on Pinus radiata needles  Pinus radiata needles, note “black line” symptom near needle bases |
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P. nemorosa oogonium  Oogonium with amphigynous antheridium |
P. pseudotsugae paragynous oogonium  P. pseudotsugae oogonium with paragynous antheridia, note the disrupted contents of the abortive oogonia |
P. frigida sporangia  Noncaducous sporangia showing ovoid shape and papillate condition |
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Dying Port Orford Cedar trees  Dead Chamaecyparis lawsoniana trees |
P. cambivora disease symptoms  Dead and dying chinquapin infected with P. cambivora |
P. cinnamomi cork oak decline  Cork oak decline, Portugal |
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Comparative gametangial morphology of Phytophthora Clade 5 species  Comparative gametangial morphology of Phytophthora Clade 5 species, with SEM (top) and light microscopy (bottom). P. heveae has smooth walled oogonia with funnel-shaped, amphigynous antheridia. P. agathidicida has mildly stipulate oogonia with globose amphigynous antheridia. P.cocois has mildly bullate oogonia with reflexed amphigynous antheridia. P. castaneae has coarsely bullate oogonium with rugose protuberances and narrow amphigynous antheridia (Weir et al. 2015). |
P. austrocedrae - necrotic lesion in phloem  |
P. tentaculata disease symptoms on sticky monkey flower  Crown and root rot (left) on sticky monkey flower (Diplacus aurantiacus) compared with a control (right) |