LICHALP

Acarospora insolata H. Magn.

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: on inclined surfaces of siliceous rocks wetted by rain, often growing on other crustose lichens (e.g. Immersaria, Rhizocarpon); certainly more widespread in the Alps.