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Lecanora pacifica is a crustose rim lichen that is found on deciduous tree bark. Thallus is thin and grayish white. The apothecia are the circular disc 0.5-1.5 mm in diam. pale yellow to orange brown with a grayish white margin.
Spotted on a dead deciduous tree, probably alder or birch. Found at the Hoh Ox Bow Campground next to the Hoh River. Endemic to western North America.