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