LICHALP

Polyblastia abscondita (Nyl.) Arnold

Syn.: Verrucaria abscondita Nyl.

Lichenised. Poorly known taxon.

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 calcareous rocks in rather sheltered situations near and above treeline; closely related to P. albida and not always distinguished from the latter.