Synonymy:
Lecidea filamentosa Stirt., Scott. Natural. 5: 218 (1879)
Biatora filamentosa (Stirt.) Walt. Watson, Census Catalogue of British Lichens: viii (1953)
Lecanora filamentosa (Stirt.) Elix & Palice, Mycol. Progr. 9(4): 531 (2010)

Lecanora symmictera Nyl., Flora, Regensburg 55(16): 249 (1872)
Lecanora symmicta f. symmictera (Nyl.) Vain., Meddn Soc. Fauna Flora fenn. 6: 160 (1881)
Lecanora varia var. symmictera (Nyl.) Flagey, Mém. Soc. ému. Doubs, sér. 5 9: 288 (1884)
Lecidea symmicta var. symmictera (Nyl.) Hedl., Bih. K. svenska VetenskAkad. Handl., Afd. 3 18(no. 3): 57 (1892)
Biatora symmicta var. symmictera (Nyl.) Elenkin, Acta Horti Petropolit. 19(1): 46 (1901)
Lecidea symmictera (Nyl.) Vain., in Norrlin & Nylander, Herb. Lich. Fenn. Cont.: no. 731 (1921)
Biatora symmictera (Nyl.) Räsänen, Ann. bot. Soc. Zool.-Bot. fenn. Vanamo 3(no. 8): 330 (1926)
Lecanora symmicta var. symmictera (Nyl.) Zahlbr., Cat. Lich. Univers. 5: 586 (1928)

Lecidea perobscura Nyl., Flora, Regensburg 57: 9 (1874)
Biatora perobscura (Nyl.) Walt. Watson, Census Catalogue of British Lichens: viii (1953)

Position in classification:
Palicella, Lecanoraceae, Lecanorales, Lecanoromycetidae, Lecanoromycetes, Ascomycota, Fungi

Note:
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