Gymnopilus rufobrunneus is a species of mushroom-forming fungus in the family Hymenogastraceae.
The cap is 2 to 3 centimetres (0.8 to 1.2 in) in diameter.[1]
Gymnopilus rufobrunneus grows in clusters on the ground, and has been found in Idaho during September.[1]
Gymnopilus rufobrunneus is a species of mushroom-forming fungus in the family Hymenogastraceae.