LICHALP

Thelidium ungeri Flot. ex Körb.

Syn.: Verrucaria ungeri Flot. ex Körb. nom.illeg.

Lichenised.

Substrate: calciferous 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: on inclined surfaces of calciferous rocks in upland areas. Closely related to Th. pyrenophorum, from which it differs in the thick, verrucose thallus; widespread throughout the Alps.