Leptogium byssinum
- kingdom: Fungi
- phylum: Ascomycota
- class: Lecanoromycetes
- order: Peltigerales
- family: Collemataceae
- genus: Leptogium
- species: Leptogium byssinum
Thurn
Tyrol
Austria
Athens
Illinois- New Bedford
Massachusetts- Cinnaminson
- Riverton
New Jersey
United States
Odensjö