Fuscidea praeruptorum (Du Rietz & H. Magn.) V. Wirth
Remarks: ID certainty: certain

Montana: Flathead County: Along trail to Snyder Creek, approx 2 km from the Lake McDonald Lodge Trailhead. About 18 km NE of West Glacier, MT. Elev. 1300 m.
48.6097298° N, -113.8489609° W
Thuja plicata-Tsuga heterophylla forest. Common. Det: B. McCune, 11/90. Soralia K+ yellow, C- w/ new C. Substrate: Saxicolous.

A. DeBolt 636, Sep 8, 1984
RR, Barcode: SRP-L-0000979