chestnut blight or canker
Cryphonectria parasitica (Murrill) M.E. Barr

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Image Descriptor Description
5488698 Symptoms Cryphonectria parasitica canker on chestnut branch
1400113 Sign Canker on main stem; note dead branch in center of canker, discolored bark, and orange bumps (stroma) breaking through killed bark.
1400112 Sign Lethal canker on main stem, with bark discoloration and orange stroma.
1400114 Sign Orange stroma of cryphonectria emerging through bark of canker.
0488100 Symptoms diseased chestnut
0454025 Symptoms Long, orange-yellow tendrils of Cryphonectria parasitica pycnidiospores exuding from pycnidia on chestnut tree bark.
1415081 Symptoms Bark necrosis. July 11, 2002
1415079 Symptoms Branch dieback. July 11, 2002
1415077 Symptoms Tree dieback. July 11, 2002
0454041 Fruiting Bodies Orange-yellow pycnidia of Cryphonectria parasitica on chestnut tree bark.
0454026 Symptoms Swelling and bark cracking on 13-year-old chestnut tree caused by Cryphonectria parasitica.
1415075 Symptoms Tree dieback. July 11, 2002
0454002 Symptoms Sunken area on bark of a young chestnut tree resulting from infection by Cryphonectria parasitica. Note adventitious shoots arising below the dead patch.
1415076 Symptoms Tree dieback. July 11, 2002
5053097 Symptoms Chestnut blight canker on American chestnut
5049007 Research Research activities concerning chestnut blight.  Person in image: Bill MacDonald
5297092 Research Experimental treatment of chestnut blight cankers in Wisconsin.  Person in image:Linda Haugen
5297093 Research Field crew doing chestnut blight research in Wisconsin.
5297094 Research Chestnut blight cankers experimentally treated with hypovirulent strain of the pathogen.
5297095 Research Chestnut blight cankers experimentally treated with a hypovirulent strain of the pathogen.
5297096 Research Chestnut blight research in Wisconsin.  Person in image: Barb Spears
5297097 Research Chestnut blight cankers experimentally treated with a hypovirulent strain of the pathogen.
5297098 Research Farm site in Wisconsin where chestnut blight cankers were experimentally treated with a hypovirulent strain of the pathogen.
5297100 People Field crew doing research on chestnut blight in Wisconsin.
5298001 Research Field crew doing research on chestnut blight in Wisconsin.
5298002 Research Field crew doing research on chestnut blight in Wisconsin.
5298003 Research Field crew doing research on chestnut blight in Wisconsin.
5298006 Research Field crew doing research on chestnut blight in Wisconsin.
5298007 Research Field crew doing research on chestnut blight in Wisconsin.
5298008 Research Field crew doing research on chestnut blight in Wisconsin.
5298009 Research Tree climbing field crew doing research on chestnut blight in Wisconsin.
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5382665 Symptoms in winter
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5382686 Infestation
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5382693 Infestation
1506071 Symptoms Chestnut blight - branch symptoms
1506072 Symptoms Chestnut blight - stem canker
5021066 Symptoms
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5049071 Symptoms epicormic sprouts
5049072 Control hypovirulence treatment; 06-01-2005
5049069 Symptoms
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5050042 Culture

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