Photobiont: Data lacking.

Chemistry: Atranorin, chloratranorin, physodic acid, traces of Oxyphysodic acid and 2'-0-Methylphysodic acid, traces of unidentified substances (Kümmerling 1991: 156). See also Elix (1975).

Ecology: On bark in tree crowns (Kümmerling 1991: 156) and at tree trunks in naturnahen areas.

Molecular data: Genbank

Distribution: Circumpolar Northern Hemisphere. Database

Note: