Polyporus arcularius
Spring polypore
The pileus is 1–5 cm wide, round, low-arched and shallow dented, finely fibrously scaly, bare when old, yellowish-brown to ochre brown, usually darker on the vertex. The tubes shortly converge and they are creamy, the pores are relatively large, elongated and shredded when mature. The stem is 1.5–4.0 cm long, central, finely scaly, brownish. The mycelium causes homogenous white rot of dead trees.
Presence of fruiting bodies with brown to brown-ocher cap, depth slightly scaly.
Tree Species: Oak
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: Heartwood, 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: Lokally
Prevalence in Europe: Common
Damaged products: Firewood
Roundwood size: Diameter from 10 up to 50 cm
Wood discoloration: Yes
Pest subcategory: White-rot
Similar pests
Polyporus varius
Polyporus badius
