Ark. Bot. 30A, 11: 21 (1942). Basionym: Parmelia megalospora Räsänen, Ann. Bot. Soc. Zool.-Bot. Fenn. Vanamo 2, 1: 18 (1932).
Basionym: Parmelia megalospora Räsänen, Ann. Bot. Soc. Zool.-Bot. Fenn. Vanamo 2, 1: 18 (1932).