Basionym Name:Cetraria islandica var. crispiformis Räsänen, Ann. bot. Soc. Zool.-Bot. fenn. Vanamo 18(no. 1): 19 (1943)
Homotypic synonyms:Cetraria crispiformis (Räsänen) Makryǐ, The Lichen Flora of Russia 3: 84 (2022)Cetraria islandica subsp. crispiformis (Räsänen) Kärnefelt, Michigan Bot. 17(4): 94 (1979)