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Image Subject Name Scientific Name Description
0725093 oak wilt Ceratocystis fagacearum Sporulating mat on red oak killed by Ceratocystis fagacearum.
0725094 Sapstreak disease of maple Ceratocystis virescens Trunk of Acer saccharum showing sap streak symptoms due to Ceratocystis virescens.
0725090 oak wilt Ceratocystis fagacearum Wilted branch on northern pin oak (Quercus ellipsoidalis) in Minnesota.
0725091 oak wilt Ceratocystis fagacearum Northern pin oak (Quercus ellipsoidalis) killed by Ceratocystis fagacearum in Minnesota. The retention of some dead leaves is characteristic of the disease.
0725092 oak wilt Ceratocystis fagacearum Xylem of red oak affected by Ceratocystis fagacearum showing diffuse stain (often there is less stain than this).
0725065 oak wilt Ceratocystis fagacearum Ceratocystis fagacearum in red oak (probably northern pin oak Quercus ellipsoidalis) surrounding a new house in Minnesota. (It was probably the pruning of trees during the building of the house that allowed oak wilt to enter the stand.

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