Distribution: Washington in Pend Oreille; Alaska to Texas, east of Rocky Mountains; disjuncts in Missouri, Tennessee/North Carolina border, along east coast.
Habitat: In exposed areas.
Substrate: On calcareous rock.
Conservation Status: Not of concern
Thallus dispersed reddish-brown squamules each containing a single apothecium <3 mm. with a lightly pruinose disk.
PNW Herbaria: Specimen records of Acarospora glaucocarpa in the Consortium of Pacific Northwest Herbaria database.
CalPhotos: Acarospora glaucocarpa photos.