Trametes gibbosa
Trametes gibbosa, commonly known as the lumpy bracket, is a polypore mushroom that causes white rot. It is found on beech stumps and the dead wood of other hardwood species. Fruit bodies are 8–15 cm in diameter and semicircular in shape. Wikipedia
Scientific name: Trametes gibbosa
Family: Polyporaceae
Class: Agaricomycetes
Division: Basidiomycota
Kingdom: Fungi