Homotypic Synonyms See Note

Basionym Name:
Lecanora contractula Nyl., Not. Sällsk. Fauna et Fl. Fenn. Förh., Ny Ser. 8: 126 (1866)

Homotypic synonyms:
Lecanora thulensis var. contractula (Nyl.) Th. Fr., Lich. Scand. (Upsaliae)(1): 227 (1871)
Myriolecis contractula (Nyl.) Śliwa, Zhao Xin & Lumbsch, in Zhao, Leavitt, Zhao, Zhang, Arup, Grube, Pérez-Ortega, Printzen, Śliwa, Kraichak, Divakar, Crespo & Lumbsch, Fungal Diversity 78(1): 300 (2015)
Polyozosia contractula (Nyl.) S.Y. Kondr., Lőkös & Farkas, in Kondratyuk, Lőkös, Jang, Hur & Farkas, Acta bot. hung. 61(1-2): 155 (2019)
Squamaria contractula (Nyl.) Räsänen, Ann. Acad. Sci. fenn., Ser. A 34(no. 4): 69 (1931)
Squamaria thulensis var. contractula (Nyl.) H. Olivier, Mém. Soc. natn. Sci. nat. Cherbourg 37: 52 (1909)