LICHALP

Acarospora bullata Anzi

Lichenised.

Substrate: 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: closely related to A. peliscypha, but with a clearly effigurated thallus; on steeply inclined faces of base-rich, weakly calciferous siliceous rocks; probably more widespread, but certainly not common in the Alps.