downy mildew (Plasmopara obducens) in Southern Plant Diagnostic Network

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Lower surface of impatiens leaf showing a layer of spores of <em>Plasmopara obduscens</em>, the cause of downy mildew

Tom Creswell, Purdue University, Bugwood.org

Lower surface of impatiens leaf showing a layer of spores of Plasmopara obduscens, the cause of downy mildew

Downy mildew of impatiens caused by <em>Plasmopara obducens</em>.

Don Ferrin, Louisiana State University Agricultural Center, Bugwood.org

Downy mildew of impatiens caused by Plasmopara obducens.

<em>Plasmopara obducens</em> sporulating on the lower leaf surface of an infected leaf.

Don Ferrin, Louisiana State University Agricultural Center, Bugwood.org

Plasmopara obducens sporulating on the lower leaf surface of an infected leaf.

downy mildew (<em>Plasmopara obducens</em>) symptoms on touch-me-not (<em>Impatiens spp.</em>)

Mary Ann Hansen, Virginia Polytechnic Institute and State University, Bugwood.org

downy mildew (Plasmopara obducens) symptoms on touch-me-not (Impatiens spp.)

downy mildew (<em>Plasmopara obducens</em>) symptoms on touch-me-not (<em>Impatiens spp.</em>)

Mary Ann Hansen, Virginia Polytechnic Institute and State University, Bugwood.org

downy mildew (Plasmopara obducens) symptoms on touch-me-not (Impatiens spp.)

Lower leaf surfaces of impatiens showing a layer of spores of <em>Plasmopara obduscens</em>, the cause of downy mildew

Tom Creswell, Purdue University, Bugwood.org

Lower leaf surfaces of impatiens showing a layer of spores of Plasmopara obduscens, the cause of downy mildew

Sporulation of <em>Plasmopara obduscens</em> on <em>Impatiens walleriana</em>

Tom Creswell, Purdue University, Bugwood.org

Sporulation of Plasmopara obduscens on Impatiens walleriana