Basionym Name:Verrucaria nigratula Nyl., Flora, Regensburg 58(7): 105 (1875)
Homotypic synonyms:Porina nigratula (Nyl.) Zahlbr., Cat. Lich. Univers. 1: 396 (1922)Segestria nigratula (Nyl.) Blomb. & Forssell, Enum. Pl. Scand.: 105 (1880)