Claim: The Gymnopilus subsphaerosporus is a mushroom in the Cortinariaceae family, a large family of gilled mushrooms containing over 2100 species that are not known to be toxic, and are widely eaten.
Evidence: Gymnopilus subsphaerosporus is a species of mushroom in the family Cortinariaceae. Family: Cortinariaceae The Cortinariaceae are a large family of gilled mushrooms found worldwide, containing over 2100 species. Despite the vast number of species in Cortinariaceae, this group is not widely eaten, and is generally avoided. There are many toxic species in this group and few are highly prized.