Climacocystis borealis
Climacocystis borealis
Description
The prominent fruiting bodies are the key sign of tree infection. Of yellowish to white, bracket-shaped and tapering at the base into a stem, they usually grow in large colonies (10 to 50 pieces) in overlapping shelves. The upper surface is velvety, while the underside consists of tubes. The pores are white and round, later labyrinth-twisted and fragmented. The fruiting bodies are annual, growing in; summer on root butts and stumps, in autumn they decompose. The mycelium causes a severe white wood rot, breaking the wood in angular detritus. Brown-yellow mycelium stripes separate the healthy and the infested wood. White mycelium residue is found in the decaying detritus (marble rot).
Symptom
The main symptoms are fruiting bodies, from yellowish to white, cantilevered and tapering from base to stem, they usually grow in large colonies.
Tree Species: Fir, Spruce
Part of a plant- attacked: Tree trunk
Pest significance: Harmful
Pest Category: Fungi
Invasive Species: No
Present in EU: Yes
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