Phylum: Basidiomycota Family: Polyphoraceae
Trametes pubescens (Schumach.) Pilát
On dead wood of deciduous trees, especially beech and birch. Light ochreous and white colours with subtle concentric rings. Widespread but not common
References:
Ryvarden & Melo (2014) Poroid Fungi of Europe
Breitenbach & Kranzlin (1986) Fungi of Switzerland, Volume 2, Non-gilled Fungi