LICHALP

Cetraria islandica (L.) Ach. subsp. islandica

Syn.: Cetraria islandica (L.) Ach. var. platyna (Ach.) Ach., Lichen islandicus L., Physcia islandica (L.) Michx.

Lichenised.

Substrate: acidic soil (mostly on siliceous substrata), calciferous soil, lignum, bark

Altitudinal range: from the submediterranean/colline belt (potential vegetation: mixed deciduous forests dominated by Quercus and Carpinus) to the nival belt (above the lower limit of perennial snow and glaciers)

Note: an arctic-alpine to boreal-montane, circumpolar lichen found on mineral and organic soil, amongst thick moss carpets, exceptionally on bark or lignum near the ground, with optimum near treeline; common and widespread throughout the Alps.