Arthonia caesia
- kingdom: Fungi
- phylum: Ascomycota
- class: Arthoniomycetes
- order: Arthoniales
- family: Arthoniaceae
- genus: Arthonia
- species: Arthonia caesia
Kitzeck im Sausal
Styria
Austria
Townsend
Wilmington
Delaware
Glencoe
Lincolnwood
Palatine
Illinois
Granby
Great Barrington
Wellesley
Massachusetts
Ferrysburg
Grand Haven
Michigan
Little Canada
West Coon Rapids
Minnesota
Loup City
Nebraska
Palmerton
Towamensing Trails
Pennsylvania
Sewanee
Tennessee
Anderson Mill
Texas
Chester
Vermont
Cape Charles
Virginia
Mount Horeb
Wisconsin
United States