Phylum: Basidiomycota Family: Incertae Sedis
Crepidotus cesatii (Rabenh.) Sacc.
Roundspored Oysterling
Widespread and common on dead wood, usually in rows
References:
Breitenbach & Kranzlin (2000) Fungi of Switzerland, Volume 5, Agarics, 3rd Part
Læssøe & Petersen (2019) Fungi of Temperate Europe, Volume 1