Sommerfeltia 14: 204 (1992).

Type locality: Norway, Hordaland, Askøy, S of lake Askavatn, alt. 0-20 m, UTM grid ref.: 32V KN 9010 (1115 I), 14 June 1984, on shaded bark of Corylus avellana under overhanging rock, T. Tønsberg 8832 (BG - holotype; DUKE, E - isotypes).

Ecology: On shaded bark of Corylus avellana.

Note: The spelling "L. obtusata" instead of "L. obtusatica" in the German Red List (Wirth et al. 2011: 49) is not correct.