LICHALP

Porina ahlesiana (Körb.) Zahlbr.

Syn.: Porina globosa (Taylor) A.L. Sm., Porina insiliens (Larbal.) A.L. Sm., Porina septemseptata (Hepp ex Zwackh) Swinscow, Segestrella ahlesiana Körb.

Lichenised.

Substrate: siliceous rocks

Altitudinal range: from the submediterranean/colline belt (potential vegetation: mixed deciduous forests dominated by Quercus and Carpinus) 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: a rare species of shaded-humid siliceous rocks, with a somehow western distribution in Europe and a wide altitudinal range; from the Alps there are only a few scattered records.