Principle species colonised

Many broad-leaved trees, typically on rosaceous species, especially cherry (e.g., Prunus cerasifera, P. domestica, and P. spinosa).

Area affected

Main stem and branches; frequently connected to pruning injuries.

Type of decay.

A White-rot

Fruit body and other fungal structures

A flat layer on the bark or a hoof-shaped, hard, woody bracket (resupinate). Occasionally, the brackets appear in overlapping tiers. Ash-grey on the upper side, turning brownish-grey as it ages. Brown, lower, pore-bearing surface that first has a greyish bloom. The tubes have a cinnamon hue, and the flesh is light brown. white or pale brown spores.

Persistence and season The brackets can last for a long time because they are perennial.

Impact / Effect / Significance

In old orchards, the deterioration can get so bad that it causes the damaged portion to snap.