Nat. Arr. Brit. Pl. (London) 1: 395 (1821). Basionym: Lichen niger Huds., Fl. Angl., Edn 2 2: 524 (1778). Type locality: Great Britain, on stones and rocks, Typification: not indicated.
Basionym: Lichen niger Huds., Fl. Angl., Edn 2 2: 524 (1778).
Type locality: Great Britain, on stones and rocks, Typification: not indicated.