Kuehneromyces mutabilis
Kuehneromyces mutabilis (synonym: Pholiota mutabilis), commonly known as the sheathed woodtuft, is an edible mushroom that grows in clumps on tree stumps or other dead wood. A few other species have been described in the genus "Kuehneromyces", but "K. mutabilis" is by far the most common and best known. Range. "Kuehneromyces mutabilis" is found in Australia, Asia (in the Caucuses, Siberia, and Japan), North America, and Europe. In Europe, it can be found from Southern Europe to Iceland and Scandinavia. Uses and caution. Though edible, "K. mutabilis" cannot be recommended as it could be confused with the  deadly poisonous "Galerina marginata", even by people who are quite knowledgeable. Although a typical "K. mutabilis" is easily distinguished from a typical "G. marginata" by the "booted" stipe which is shaggy below the ring (see photos), this character is not reliable and "G. marginata" can also have scales. The main differences are: The caps of this mushroom can be fried or used for flavouring in sauces and soups (the stems being considered too tough to eat).