LICHALP

Rhizocarpon reductum Th. Fr.

Syn.: Rhizocarpon obscuratum auct. non (Ach.) A. Massal., Rhizocarpon massalongii (Körb.) Malme

Lichenised.

Substrate: siliceous rocks

Altitudinal range: from the mesomediterranean belt (potential vegetation: evergreen broad-leaved forests dominated by Quercus ilex) to the nival belt (above the lower limit of perennial snow and glaciers)

Note: a morphologically and chemically variable species of siliceous rocks, often found on pebbles or on surfaces of boulders near the ground; the optimum is in upland areas, but the species also occurs within eu-Mediterranean vegetation, in shaded-humid situations; widespread throughout the Alps.