Tsuga heterophylla
This species is found in the Pacific Northwest region of North America where it grows on large (at least 1 m diameter) specimens of noble fir ("Abies procera"), Pacific silver fir ("Abies amabilis"), or western hemlock ("Tsuga heterophylla"). "Bridgeoporus nobilissimus" causes a brown rot in its tree hosts. Genetic analysis shows that the fungus is more prevalent than fruit body distribution indicates.