Pitted beard lichen
- kingdom: Fungi
- phylum: Ascomycota
- class: Lecanoromycetes
- order: Lecanorales
- family: Parmeliaceae
- genus: Usnea
- species: Usnea cavernosa
Achenkirch
Tyrol
Austria
Beauceville
Quebec
Canada
Lauterbrunnen
Bern
Switzerland
Buena Vista
Colorado- Grand Marais
Minnesota- Clackamas
Oregon
United States