LICHALP

Myriospora scabrida (Hedl. ex H. Magn.) K. Knudsen & Arcadia

Syn.: Acarospora scabrida Hedl. ex H. Magn., Silobia scabrida (Hedl. ex H. Magn.) M. Westb., Trimmatothelopsis scabrida (Hedl. ex H. Magn.) Cl. Roux & Nav.-Ros.

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 an epilithic thallus consisting of pale grey to pale brown squamules, and large apothecia with brown, somewhat raised discs; usually on acidic schistose rocks; widespread in Europe and also known from both Americas; so far only recorded from a few localities in the Alps, perhaps still overlooked elsewhere.