LICHALP

Acrocordia salweyi (Leight. ex Nyl.) A.L. Sm.

Syn.: Arthopyrenia salweyi (Leight. ex Nyl.) Zahlbr., Verrucaria salweyi (Leight. ex Nyl.) Leight. ex Cromb.

Lichenised.

Substrate: acidic soil (mostly on siliceous substrata)

Altitudinal range: from the mesomediterranean belt (potential vegetation: evergreen broad-leaved forests dominated by Quercus ilex) to the submediterranean/colline belt (potential vegetation: mixed deciduous forests dominated by Quercus and Carpinus)

Note: an apparently Mediterranean-Atlantic, mild-temperate species (from Macaronesia to Norway), found on soft calcareous substrata (mortar, calciferous sandstone) in warm-humid areas; certainly very rare in the Alps.