About Tricholoma acerbum (Bull.) Quél.
Tricholoma acerbum (Bull.) Quél. is an agaric mushroom that belongs to the family Tricholomataceae. This species is distributed across Europe and North America, where it grows in temperate deciduous oak forests. It forms mycorrhizal associations with oak, chestnut, linden, and hazel trees. In southern Europe, it has been recorded growing in mesotrophic to base-rich soils that are not calcareous, while in Norway and Russia, it has been observed growing in calcareous soils. In multiple countries across northern, western, and central Europe, Tricholoma acerbum is classified as endangered to critically endangered. It faces threats from deforestation, loss of forest grazing, and the shift in silvicultural practice from growing oak to conifer species; these factors lead to fragmentation and complete degradation of its habitat. The IUCN recommends setting aside dedicated oak forest reserves and reintroducing cattle grazing in many areas to maintain high-quality habitat for Tricholoma acerbum. This mushroom is considered edible.
