LICHALP

Thelidium exile Arnold

Lichenised.

Substrate: calciferous rocks

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: on more or less calciferous rocks in upland areas. The species was frequently considered as a synonym of Th. minutulum, but according to Roux et coll. (2014) it differs in having half-protruding perithecia; from the Alps there are only a few scattered records.