Hygrophorus sordidus is a type of mushroom which is characterized by its brown cap and white gills. It is also known by several other names, including Brown Wax Cap, Dirty Wax Cap, and Chocolate Crackling. The mushroom is found in coniferous forests across North America and Europe. In addition to its various names, the Hygrophorus sordidus is often grouped with other mushrooms in the same genus, including Hygrophorus hypothejus and Hygrophorus russula. These mushrooms are also commonly referred to as wax caps due to their waxy, smooth caps. Despite its many names, the Hygrophorus sordidus is a unique and fascinating member of the fungal world, and it continues to intrigue and inspire mushroom enthusiasts everywhere.