LICHALP

Rhizocarpon renneri Poelt

Lichenised.

Substrate:

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: on steeply inclined to underhanging surfaces of siliceous rocks, starting the life-cycle on the thalli of Dimelaena oreina; probably more widespread, but never common, in the dry valleys of the Alps.