Calicium quercinum
- kingdom: Fungi
- phylum: Ascomycota
- class: Lecanoromycetes
- order: Teloschistales
- family: Physciaceae
- genus: Calicium
- species: Calicium quercinum
Bürserberg
Vorarlberg
AustriaTurku
Ostrobothnia
FinlandVibble
GotlandKolbäck
VästmanlandKimstad
Norrköping
Skärblacka
Sturefors
Valdemarsvik
Östergötland
Sweden