LICHALP

Verrucaria triglavensis Servít

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: a calcicolous species with a mainly endolithic thallus emerging only as brown dots or patches, conically to hemispherically protruding ascomata (to c. 0.3 mm in diam.), a thick, adpressed involucrellum reaching down about a third of the perithecium, and ellipsoid ascospores (to c. 30 µm long); only known from the Eastern Alps (Austria and Slovenia).