LICHALP

Umbilicaria hyperborea (Ach.) Hoffm.

Syn.: Gyrophora aenea Schaer. var. hyperborea (Ach.) Schaer., Gyrophora hyperborea (Ach.) Ach., Gyrophora ustulata (Vain.) Dalla Torre & Sarnth., Lichen hyperboreus Ach.

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 nival belt (above the lower limit of perennial snow and glaciers)

Note: an arctic-alpine, probably circumpolar lichen found on siliceous boulders wetted by rain, usually near the ground, with optimum near treeline.