Basionym Name:Rhizocarpon geographicum f. brenneri Räsänen, Ann. bot. Soc. Zool.-Bot. fenn. Vanamo 16(Notul. Botan. 12): 57 (1942)
Homotypic synonyms:Rhizocarpon geographicum var. brenneri (Räsänen) Räsänen, Lichenotheca Fennica: no. 284 (1947)