Basionym Name:Rhizocarpon chionophilum f. gerontoides Th. Fr., Lich. Scand. (Upsaliae)(2): 612 (1874)
Homotypic synonyms:Rhizocarpon alpicola f. gerontoides (Th. Fr.) Lynge, Rep. Sci. Res. Norweg. Exped. Novaya Zemlya, 1921 43: 131 (1928)Rhizocarpon oreites f. gerontoides (Th. Fr.) Vain., Acta Soc. Fauna Flora fenn. 53(no. 1): 234 (1922)Rhizocarpon oreites var. gerontoides (Th. Fr.) Räsänen, Lich. Fenn. Exs.: no. 809 (1943)