[Lichens of the Cascade Mountains of Oregon and Washington]

What appears to be rock tripe on andesitic rock along the Climber's Trail near the southwestern head of Hellroaring Valley, southeast corner of Mount Adams...........August 12, 2013. Possibly Rhizoplaca sp. to its upper right?.

What appears to be blistered rock tripe (Umbilicaria hyperborea) on andesitic rock in the alpine zone along the Butte Camp Trail, Mount Saint Helens National Monument............July 9, 2013.

Blistered rock tripe (Umbilicaria hyperborea) on a rock face atop Sunrise Peak in the Dark Divide, Gifford Pinchot National Forest............September 12, 2014.