Photo Gallery

Site will be retired 9/1/2026

This site is no longer being developed and will be retired on September 1, 2026. Please contact us if you have any questions or would like to provide support to continue the project.

P. cambivora sporangium

Ovoid non- papillate sporangia

P. cinnamomi cork oak decline

Cork oak decline, Portugal

P. cactorum bleeding canker

Bleeding canker on red oak (Quercus rubra)

P. cambivora symptoms

Bleeding canker, European beech, OSU campus

P. cryptogea sporangium

Obpyriform non-papillate sporangia in water

P. austrocedrae colony morphology on PDA

Colony morphology of P. austrocedrae at 16 C after four weeks on PDA

P. boehmeriae symptoms

Symptoms of gummosis on black wattle (Acacia mearnsii)

P. pluvialis  on Pinus radiata needle

Clusters of sporangia emerge from stomata of an infected radiata pine needle.

P. arenaria sporangia

Globose papillate sporangia of Phytophthora arenaria on V8 agar flooded with soil extract. (Scale bar = 20 μm)

P. tentaculata disease symptoms on sticky monkey flower

Outplanted sticky monkey flower (Diplacus aurantiacus) infected with P.
tentaculata 1.5 years after outplanting. Plant shows severe stunting and dieback.

P. alni in riparian alder, Scotland

P. alni in riparian alder, Scotland

P. cambivora symptoms

Dead beech in Germany

Pages