Distribution: Washington; Uncertain, but widespread in US boreal and temperate zones.
Substrate: Abundant on bark and wood of many tree species. May also occur on rock.
Conservation Status: Not of concern
Apothecia abundant, 0.3-0.5 mm, orange to orangish-yellow, margins of same color or slightly lighter.
PNW Herbaria: Specimen records of Caloplaca holocarpa in the Consortium of Pacific Northwest Herbaria database
CalPhotos: Caloplaca holocarpa photos