volvopluteus gloiocephalus, commonly known as the big sheath mushroom, rose-gilled grisette

agaricales autumn background basidiomycota beautiful big sheath mushroom cap closeup cone conical consumable delicate detail food foot forest fresh fungal fungi fungus gilled gills gloiocephala gloiocephalus greyish grisette indedible macro mycelium mycology natural nature outdoor plant pluteaceae rosegilled season speciosa stem stubble rosegill umbo volvariella volvopluteus white commonly species family