Distribution: West of Cascades crest in Washington; Oregon, California, midwest and central states, Maine to South Carolina; British Columbia, Alberta, Quebec, disjunct in Northwest Territories.
Habitat: Widely distributed.
Substrate: Rock of all kinds, wood and soil.
Conservation Status: Not of concern
Thallus, egg-yolk yellow to dark yellow-orange; Areoles granular, becoming a leprose crust; Apothecia rare, but may be abundant in some specimens.