LICHALP

Pertusaria coccodes (Ach.) Nyl.

Syn.: Lichen coccodes Ach., Pertusaria phymatodes (Ach.) Erichsen

Lichenised.

Substrate: bark, lignum, living mosses, siliceous rocks

Altitudinal range: from the mesomediterranean belt (potential vegetation: evergreen broad-leaved forests dominated by Quercus ilex) to the subalpine belt (potential vegetation: open, taiga-like forests dominated by Larix decidua and/or Pinus cembra and Rhododendron)

Note: a mild-temperate lichen, mostly found on old oaks or beech trees, with optimum in open woodlands, much more rarely on siliceous rocks; widespread throughout the Alps, but only locally common.