LICHALP

Pertusaria amarescens Nyl.

Syn.: Pertusaria affinis Erichsen, Pertusaria coudercii Harm., Pertusaria flavicans Lamy var. coudercii (Harm.) Erichsen

Lichenised. Poorly known taxon.

Substrate: siliceous rocks, calciferous rocks

Altitudinal range: from the mesomediterranean belt (potential vegetation: evergreen broad-leaved forests dominated by Quercus ilex) to the alpine belt (potential vegetation: treeless Alpine grasslands and tundras, to the lower limit of perennial snow and the equilibrium line of glaciers)

Note: an often misunderstood species, or confused with P. flavicans or Lepra aspergilla. The species, however, seems to be quite common in the SW Alps (France).