Lecidea plana (J. Lahm) Nyl.

Syn.: Catillaria eximia Malme, Catillaria stromatoides H. Magn., Lecidea enteromorpha (Flot.) Vain., Lecidea latypea Ach., Lecidella plana J. Lahm
Lichenised.
Substrate: siliceous rocks, metal-rich 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 circumpolar, arctic-alpine to boreal-montane lichen found on acid siliceous rocks, often on iron-rich substrata, on low boulders wetted by rain in humid areas, with optimum near and above treeline.
Austria: Vorarlberg; Tirol; Salzburg; Kärnten; Steiermark; Burgenland; Switzerland: Ticino; Valais; France: Haute-Alpes; Alpes-Maritimes; Isère; Haute-Savoie; Italy: Veneto; Trentino Alto Adige; Lombardia; Piemonte; Valle d'Aosta; Slovenia: Alpine and Pre-Alpine Slovenia;