LICHALP

Placopsis gelida (L.) Linds.

Syn.: Lecanora gelida (L.) Ach., Lecanora gelida (L.) Ach. f. neglecta Degel., Lichen gelidus L., Placodium gelidum (L.) Gray, Squamaria gelida (L.) Hook.

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 boreal-montane to arctic-alpine, incompletely circumpolar lichen found on small siliceous pebbles and on basal parts of large boulders, mostly in moist situations of the upper montane and subalpine belts; rare in the Alps.