U.S.A., Montana, Lake, Stop 3: Soda Springs Ranger Station, about 14 miles west of Lake Pillsbury Resort, 8 mi NE of Potter Valley, Mendocino National Forest.
Open Oak/ Pine woodland. Mixed Quercus kelloggii, Pine, Ceanothus, Cercocarpus, etc. On Pinus.
Grey-black translucent apothecia; white crust. Collected also with Cal. Lichen Society. Substrate: Corticolous.