Tag Archives: red thread

Disease Hotline Issue 10

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Discula anthracnose on dogwood leaves.

 

 

 

 

Close-up of discula anthracnose on dogwood leaf.

 

 

 

 

 

Discula anthranose on dogwood flower petals.  This and the previous images of dogwood anthracnose (discula anthracnose) were provided by:  Robert L. Anderson, USDA Forest Service, Bugwood.org

 

 

 

 

 

Image of discula anthracnose on stem of flowering dogwood.  Photo provided by:  Mary Ann Hansen, Virginia Polytechnic Institute and State University, Bugwood.org

Photos of red thread have already been posted to the site.  Please use the search function to locate images.

Disease Hotline Issue 8

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Septoria leaf spot on chrysanthemums. Photo provided by: Division of Plant Industry Archive, Florida Department of Agriculture and Consumer Services, Bugwood.org

Red thread. Photo provided by: Mary Ann Hansen, Virginia Polytechnic Institute and State University, Bugwood.org

A close-up of the “Red Threads”. (provided by Dr. Eric B. Nelson, Cornell University) Photo found at http://plantclinic.cornell.edu/FactSheets/redthread/redthread.htm

Disease Hotline Issue 13

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Tree with symptoms of horsechestnut leaf blotch.

Horsechestnut leaf blotch. Photos of horsechestnut leaf blotch were found at the following website: http://www.ppdl.purdue.edu/PPDL/weeklypics/9-11-06.html.

This image of Phyllosticta leaf spot was taken from: http://ohioline.osu.edu/hyg-fact/3000/3044.html

This image of red thread was found at the following website: http://www.plantpath.wisc.edu/tddl/tddl/disimg/red/plant.jpg