Distribution: West of Cascades crest in Washington; Montana, Wyoming, Utah, Colorado, Arizona, New Mexico, midwestern states, Arkansas, Louisiana, Mississippi, Alabama, Georgia, New York to Maine; southern Canada from Alberta to Nova Scotia.
Substrate: On bark of deciduous trees and conifers, and on wood.
Conservation Status: Not of concern
Thallus pale sulphur-yellow, grey when in shade, continuous and smooth; Apothecia orange, occasionally with pale yellow to white pruina, to 1.5 mm in diameter.
PNW Herbaria: Specimen records of Caloplaca flavorubescens in the Consortium of Pacific Northwest Herbaria database
CalPhotos: Caloplaca flavorubescens photos