Pitted beard lichen
- kingdom: Fungi
- phylum: Ascomycota
- class: Lecanoromycetes
- order: Lecanorales
- family: Parmeliaceae
- genus: Usnea
- species: Usnea cavernosa
Achenkirch
Tyrol
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Quebec
CanadaLauterbrunnen
Bern
SwitzerlandBuena Vista
ColoradoGrand Marais
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United States