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Cenangium ferruginosum

Pine dieback

Description

It is a necrotic limb bark disease of various pine species. The infection occurs from the middle of July until the middle of September through various wounds on branches. The needles turn brown from the basis up to the point, the under-bark tissues die even before the symptoms on needles occur. However, these are always the symptoms reminding of Sphaeropsis sapinea or Gremmeniella abietina fungal infection. The sufficient evidence of Cenangium limb canker are the fruiting bodies created in bark cracks on dead twigs, typically in dense row formations, or in smaller groups. In wet conditions, the fruiting bodies are plate-like open, 1-2 mm wide and pale brown. In dry conditions, the fruiting bodies are grey to black and folded. Infestation can be severe.

Symptom

Black fruiting bodies on branches. 

Tree Species: Pine

Part of a plant- attacked: Leaf / Needle, Branch

Pest significance: Very harmful

Pest Category: Fungi

Invasive Species: No

Present in EU: Yes