LICHALP

Arthothelium spectabile A. Massal.

Syn.: Arthonia difformis Nyl.

Lichenised.

Substrate: bark

Altitudinal range: from the submediterranean/colline belt (potential vegetation: mixed deciduous forests dominated by Quercus and Carpinus) to the montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies)

Note: a temperate-suboceanic lichen found on the smooth bark of deciduous trees in ancient forests; from the Alps there are only a few scattered records.