Basionym Name:Rhizocarpon geographicum var. lavatum Samp., Bolm Soc. broteriana, Coimbra, sér. 2 2: 20 (1924)
Homotypic synonyms:Rhizocarpon sublucidum var. lavatum (Samp.) Räsänen, Arch. Soc. Zool. Bot. fenn. Vanamo 3: 85 (1949)