LICHALP

Lecanora umbrosa Degel.

Syn.: Lecanora neglecta (Räsänen) Räsänen, Lecanora sorediifera (Th. Fr.) Räsänen non Fée, Lecanora subfusca (L.) Ach. var. sorediifera Th. Fr.

Lichenised.

Substrate: siliceous rocks, intermediate rocks (such as calciferous schists)

Altitudinal range: from the montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies) 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 cool-temperate to circumboreal-montane lichen found on steeply inclined to underhanging surfaces of weakly calciferous or base-rich, weathered siliceous rocks near or above treeline; widespread in the Alps but regionally overlooked, being often sterile.