I found it growing on the bark of a somewhat short deciduous tree. I'm not great at tree identification but I believe it's a type of Aspen. Pale whitish bark, mostly smooth but it is largely covered with a patchwork pattern of crustose lichens, most of which keyed to Lecanora. I found this during winter so I'm not sure about the foliage. It was on a trail, maybe 30ish feet uphill from a small creek. The aspect of the slope is due east, partially shaded by similar trees across the trail. Found in the Iller Creek Unit, approximately 47.6003417, -117.2811975. I am attaching a Google satellite image that shows the habitat, and the trees pictured are the type I found this specimen on.
