[Navel Lichens and Rock Tripe: The Genus Umbilicaria East of the Cascade Mountains of Oregon and Washington]

Blistered rock tripe on a granitic bouler at the summit of the Lakes Lookout, Anthony Lakes Recreational Area, Wallowa-Whitman National Forest..........July 25, 2013.

Blistered rock tripe on a granitic bouler at the summit of the Lakes Lookout, Anthony Lakes Recreational Area, Wallowa-Whitman National Forest..........July 25, 2013.

Blistered rock tripe as seen (left) on basalt boulders at Fields Springs State Park, Anatone, Washington...........June 11, 2013. The photo at right shows what may be blistered rock tripe on basaltic rocks atop Lookout Mountain, Ochoco National Forest.........June 15, 2015.