decay and failure

Branch failure in a large tree.

Dead tree with extensive decay; failure near road.

Box elder with extensive decay. Failed in a windstorm.

Box elder with extensive decay and very little sound wood. Failed in a windstorm.

Cottonwood with extensive decay, failed in a windstorm.

Extensive decay in a tree that collapsed during a windstorm.

Failed branch attached to decaying codominant stem.

Failed decayed branch.

Old, poorly sealing branch failure.

The fruiting bodies of a decay fungus on a dead tree.

Tree with green crown, but extensive decay in the bole.

Tree with a green crown, but extensive decay in the bole.

Tree with green crown, but extensive decay in the bole.

Tree with green crown, but extensive decay in the bole.

white mycellia in cavity of tree

Sawdust at base of tree, indicating internal decay.

Decay in stump from old codominant stem.

Cross section showing extensive decay of heartwood, but showing good compartmentalization.

Cross section with extensive decay and carpenter ant tunnels.

Tree with wound caused by lightning, and associated woodpecker injury.

Discoloration and decay in wood pile after storm damage.

Hole in tree from decayed branch drop-out.

Cavity and decay in bole, with abundant epicormic branching.

Stump with extensive internal decay.

Large open cavity and decay in bole of large tree.

Extensive decay in bole (cross-section).

Open cavity and decay at base of bole.  Peter Bedker, Peggy Sand

Sawdust and woodchips at base of decayed tree.

Brown cubical rot at base of dead tree.

Basal decay in oak; cause unknown.

Brown cubical rot, unknown cause.

Large, dead, decayed white pine. Martin MacKenzie provides scale.

Using an increment corer to examine a tree for decay.