LICHALP

Gyalecta truncigena (Ach.) Hepp

Syn.: Gyalecta abstrusa (Wallr.) A. Massal., Gyalecta wahlenbergiana Ach. var. truncigena Ach.

Lichenised.

Substrate: bark

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 temperate lichen found on mature trees, mostly Acer and Fraxinus, but also on the slightly nutrient-enriched bark of more acid-barked trees, such as oaks, in mild-humid areas; more common in the past, presently localised in clearings of ancient, open, humid forests; widespread throughout the Alps, but generally not very common.