White spotted lichen on oak trunk

White spotted lichen on oak trunk

Observation - White spotted lichen on oak trunk - UK and Ireland. Description: Large areas (most) of north side of oak trunk covered with white crustose lichen with white spots. Chemical tests: C- , K+ yellow. Possibly Lecanactis subabietina.

Large areas (most) of north side of oak trunk covered with white crustose lichen with white spots. Chemical tests: C- , K+ yellow. Possibly Lecanactis subabietina.