Waterfan lichen
- kingdom: Fungi
- phylum: Ascomycota
- class: Lecanoromycetes
- order: Peltigerales
- family: Peltigeraceae
- genus: Peltigera
- species: Peltigera hydrothyria
Mariposa
California- Cockeysville
- Hunt Valley
Maryland- Sloatsburg
New York- Birdsboro
Pennsylvania- Brattleboro
Vermont- Seattle
Washington
United States