LICHALP

Buellia arborea Coppins & Tønsberg

Lichenised.

Substrate: lignum

Altitudinal range: from the montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies) to the subalpine belt (potential vegetation: open, taiga-like forests dominated by Larix decidua and/or Pinus cembra and Rhododendron)

Note: a usually sterile species with bluish-greenish, roundish to elongated, flat to concave soralia, the soredia reacting K- in squash preparations; usually on periodically dry wood of logs and old fences at high elevations; widespread in the Alps and regionally rather common.