LICHALP

Phlyctis argena (Spreng.) Flot.

Syn.: Parmelia argena Spreng., Pertusaria reducta Stirt., Phlyctis erythrosora Erichsen, Urceolaria variolarioides Pers.

Lichenised.

Substrate: bark, siliceous rocks

Altitudinal range: from the mesomediterranean belt (potential vegetation: evergreen broad-leaved forests dominated by Quercus ilex) to the montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies)

Note: a subtropical to southern boreal-montane, holartic lichen, an aggressive coloniser of smooth bark (e.g. of Carpinus) in sheltered situations (e.g. in forests), with optimum in the deciduous forest belts; widespread and common throughout the Alps.