Scleroderris canker of pine and spruce (Gremmeniella abietina) in Pests not Known to Occur in North America

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pycnidia of Brunchorstia pinea on a dead twig; June 2000

Petr Kapitola, Central Institute for Supervising and Testing in Agriculture, Bugwood.org

pycnidia of Brunchorstia pinea on a dead twig; June 2000

Brown necrotic lesions at the basis of a bud

Biologische Bundesanstalt für Land- und Forstwirtschaft , Bugwood.org

Brown necrotic lesions at the basis of a bud

Scleroderris canker of pine and spruce (<em>Gremmeniella abietina</em>) symptoms on pine (<em>Pinus spp.</em>)

USDA Forest Service - North Central Research Station , USDA Forest Service, Bugwood.org

Scleroderris canker of pine and spruce (Gremmeniella abietina) symptoms on pine (Pinus spp.)

lower branches infected with Scleroderris canker

USDA Forest Service - North Central Research Station , USDA Forest Service, Bugwood.org

lower branches infected with Scleroderris canker

Scleroderris canker of pine and spruce (<em>Gremmeniella abietina</em>) symptoms on pine (<em>Pinus spp.</em>)

USDA Forest Service - North Central Research Station , USDA Forest Service, Bugwood.org

Scleroderris canker of pine and spruce (Gremmeniella abietina) symptoms on pine (Pinus spp.)

only red pine trees are damaged

USDA Forest Service - North Central Research Station , USDA Forest Service, Bugwood.org

only red pine trees are damaged

Scleroderris canker of pine and spruce (<em>Gremmeniella abietina</em>) symptoms on red pine (<em>Pinus resinosa</em>)

USDA Forest Service - North Central Research Station , USDA Forest Service, Bugwood.org

Scleroderris canker of pine and spruce (Gremmeniella abietina) symptoms on red pine (Pinus resinosa)

Scleroderris canker of pine and spruce (<em>Gremmeniella abietina</em>) symptoms on red pine (<em>Pinus resinosa</em>)

USDA Forest Service - North Central Research Station , USDA Forest Service, Bugwood.org

Scleroderris canker of pine and spruce (Gremmeniella abietina) symptoms on red pine (Pinus resinosa)

Branch dieback. July 16, 2002

Andrej Kunca, National Forest Centre - Slovakia, Bugwood.org

Branch dieback. July 16, 2002

June 24, 2003

Andrej Kunca, National Forest Centre - Slovakia, Bugwood.org

June 24, 2003

July 4, 2003

Andrej Kunca, National Forest Centre - Slovakia, Bugwood.org

July 4, 2003

Scleroderris canker of pine and spruce (<em>Gremmeniella abietina</em>) symptoms

USDA Forest Service - Region 2 - Rocky Mountain Region , USDA Forest Service, Bugwood.org

Scleroderris canker of pine and spruce (Gremmeniella abietina) symptoms

dead twigs infested by the fungus; June 2002

Petr Kapitola, Central Institute for Supervising and Testing in Agriculture, Bugwood.org

dead twigs infested by the fungus; June 2002

Green stain of wood caused by G. abietina

USDA Forest Service - Northeastern Area , USDA Forest Service, Bugwood.org

Green stain of wood caused by G. abietina

Scleroderris canker of pine and spruce (<em>Gremmeniella abietina</em>) fruiting bodies

Joseph OBrien, USDA Forest Service, Bugwood.org

Scleroderris canker of pine and spruce (Gremmeniella abietina) fruiting bodies

Scleroderris canker of pine and spruce (<em>Gremmeniella abietina</em>) sign

USDA Forest Service - Forest Health Protection Eastern Region - St. Paul, MN , USDA Forest Service, Bugwood.org

Scleroderris canker of pine and spruce (Gremmeniella abietina) sign