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Pseudonectria canker/Volutella leaf and stem blight (Pseudonectria rousseliana) on Boxwood (Buxus sp.)


12 Images
5385775
Paul Bachi
University of Kentucky Research and Education Center

Branch dieback and leaves turning from green to brown

5385776
Paul Bachi
University of Kentucky Research and Education Center

Close-up of branch dieback and leaves turning from green to brown

5385777
Paul Bachi
University of Kentucky Research and Education Center

Small, salmon-colored, waxy spore-producing bodies ("sporodochia") on lower leaf surface

5385778
Paul Bachi
University of Kentucky Research and Education Center

Small, salmon-colored, waxy spore-producing bodies ("sporodochia") on lower leaf surface

5385779
Paul Bachi
University of Kentucky Research and Education Center

Small, salmon-colored, waxy spore-producing bodies ("sporodochia") on lower leaf surface. Tiny reddish dashes are sterile structures of the fungus called "setae".

5385780
Paul Bachi
University of Kentucky Research and Education Center

Small, salmon-colored, waxy spore-producing bodies ("sporodochia") on branch

5385781
Paul Bachi
University of Kentucky Research and Education Center

Small, salmon-colored, waxy spore-producing bodies ("sporodochia") on branch

5385782
Paul Bachi
University of Kentucky Research and Education Center

Small, salmon-colored, waxy spore-producing bodies ("sporodochia") on branch

5385783
Paul Bachi
University of Kentucky Research and Education Center

Clusters of conidiophores and setae with many spores of the anamorph fungus Volutella buxi; asexual stage of Pseudonectria rousseliana.

5385784
Paul Bachi
University of Kentucky Research and Education Center

A single group of conidiophores and setae (3) with many spores of the anamorph fungus Volutella buxi, the asexual stage of the fungus Pseudonectria rousseliana.

5385785
Paul Bachi
University of Kentucky Research and Education Center

Many spores of the anamorph fungus Volutella buxi, the asexual stage of the fungus Pseudonectria rousseliana.

5385786
Paul Bachi
University of Kentucky Research and Education Center

Close-up of spores of the anamorph fungus Volutella buxi, the asexual stage of the fungus Pseudonectria rousseliana.