Ceratocystis fagacearum

C. fagacearum in red oak (probably Quercus ellipsoidalis) in Minnesota (US).
J.N. Gibbs - Forestry Commission (GB)

Quercus ellipsoidalis killed by C. fagacearum in Minnesota. The retention of some dead leaves is characteristic of the disease.
J.N. Gibbs - Forestry Commission (GB)

Advanced stage of C. fagacearum infection on oak: general view of wilted tree.
C.E. Seliskar (US)

Quercus macrocarpa with oak wilt symptoms on one branch only.
J.N. Gibbs - Forestry Commission (GB)

Wilted branch onQuercus ellipsoidalis in Minnesota.
J.N. Gibbs - Forestry Commission (GB)

Foliar symptoms caused by
C. fagacearum on oak.
C.E. Seliskar (US)

Foliar symptoms onQuercus velutina showing bronzing starting at the leaf apices and lobes, and a localized area of green tissue around the base of the midrib. - C.E. Seliskar (US)

Xylem of red oak affected by C. fagacearum showing diffuse stain
(often there is less stain than this)
J.N. Gibbs - Forestry Commission (GB)

Sporulating mat on red oak killed by C. fagacearum.
J.N. Gibbs - Forestry Commission (GB)

Mature mycelial mat of C. fagacearum just under the bark of a wilted Quercus coccinea tree.
C.E. Seliskar (US)