Colpoma quercinum

Split gill

It is predominantly a saprophytic to a weakly parasitic fungus that causes dying of young trees and side branches in the lower part of the trunk of older trees suffering mainly from a lack of light or nutrients. Thus, the fungus contributes on a large scale to so-called natural cleaning of oak trunks from branches. Spores of the asexual stage Clithris quercina are not able to infect host tissues. Sexual apothecia have a shape of small lengthwise openings and they are usually formed on completely dead branches and sprouts.

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Small lengthwise openings and they are usually formed on completely dead branches and sprouts.

Tree Species: Oak, Chestnut

Part of a plant- attacked: Branch

Pest significance: Less harmful

Pest Category: Fungi

Invasive Species: No

Present in EU: Yes

Pest group: Fungi

Affected part of wood: Sapwood

Depth of damages: More than 5 cm depth, Under bark only, Up to 0,5 cm depth, Up to 2 cm depth, Up to 5 cm depth

The extent of damage: Individually - one place

Prevalence in Europe: Common

Damaged products: Firewood, Fresh timber logs (water still in the sapwood), Furniture, Lumber, boards and prisms, Wood chips, Wooden house constructions

Roundwood size: Branches and twigs

Wood discoloration: No

Pest subcategory: White-rot