Dual map lichen
- kingdom: Fungi
- phylum: Ascomycota
- class: Lecanoromycetes
- order: Lecanorales
- family: Rhizocarpaceae
- genus: Rhizocarpon
- species: Rhizocarpon geminatum
Potamiá
East Macedonia and Thrace
GreeceUummannaq
05
GreenlandLauterbrunnen
Bern
SwitzerlandEast Foothills
California
United States