Method. Lich.: 44 (1803).

Basionym: Lichen fusco-ater L., in Species Plantarum 2: 1140 (1753).

Protolog type data: Habitat in Europae rupibus.

Type locality: Sweden, Uppland, Uppsla, Vårdsätra, 17 May 1964, R. Santesson 16.299 (UPS - neotype). Designated by Hertel (1977: 244).

Chemistry: Gyrophoric acid, Ergosterin, 2-O-methylconfluentin acid (Huneck 1976: 190, Huneck & Schreiber 1973).