| Abbreviation | Species | Common Name |
| CETISL | Cetraria islandica | Iceland-moss |
| CLAARB | Cladonia arbuscula | no common name |
| CLAMIT | Cladonia mitis | no common name |
| CLARAN | Cladonia rangiferina | no common name |
| CLASPP | Cladonia (Cladina) spp. | reindeer lichens |
| CLASTE | Cladonia stellaris | no common name |
| CLASTY | Cladonia stygia | no common name |
| COLTEN | Collema tenax | black lichen |
| PELAPH | Peltigera aphthosa | green dog lichen |