[Lichens of the Columbia River Gorge of Oregon and Washington]

Orange Wall Lichen

Xanthoria polycarpa

Synonym: Teloschistes polycarpus

Orange Wall Lichen: Xanthoria polycarpa (Synonym: Teloschistes polycarpus) on Quercus garryana

Orange wall lichen as seen on the bark of Oregon white oak (Quercus garryana) along Horseshoe Bend Road about 3.5 miles uphill to the east of the Klickitat River, Klickitat County, Washington................March 31, 2012.

Paul Slichter