Abh. naturw. Ver. Bremen 21, 1: 184 (1912).

Basionym: Lecanora cyrtellina Nyl., Flora, Regensburg 56: 18 (1873).

Protolog type data: Ad corticem Sorbi aucupariae prope Petrosavodsk juxta Onegam (Norrlin).

Type locality: Russia, Republic Karelia, near Petrozavodsk (the capital) near the river Onega, on bark of Sorbus aucuparia, Norrlin (xx).