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| Calicium quercinum | |
|---|---|
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Lecanoromycetes |
| Order: | Caliciales |
| Family: | Caliciaceae |
| Genus: | Calicium |
| Species: | C. quercinum
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| Binomial name | |
| Calicium quercinum Pers. (1797)
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Calicium quercinum is a species of lichen belonging to the family Caliciaceae.
It is native to Europe and Northern America.[1]