LICHALP

Gyalidea fritzei (Stein) Vězda

Syn.: Gyalecta fritzei Stein

Lichenised.

Substrate: siliceous 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 species with a thin smooth thallus, sessile apothecia with concave discs and brown to blackish margins, and muriform ascospores, found on siliceous rocks in humid-shaded habitats, such as along creeks, with optimum above treeline; for the Alps it is known from several scattered localities.