Phylum: Basidiomycota Family: Mycenaceae
Mycena aetites (Fr.) Quél.
Drab Bonnet
A widespread species with records biased towards England, with just a scattering across mainland Scotland. Being drab, it's easily overlooked
References:
Aronsen & Laessoe (2016) The Genus Mycena
Robich (2007) Mycena d'Europe