Distribution: Washington; Alaska to California.
Habitat: Exposed rock.
Substrate: Non-calcareous rock.
Conservation Status: Not of concern
Thallus grey to purplish, lower surface black, rhizines present. Apothecia black, common.
PNW Herbaria: Specimen records of Umbilicaria angulata in the Consortium of Pacific Northwest Herbaria database
CalPhotos: Umbilicaria angulata photos