LICHALP

Rhizocarpon atroflavescens Lynge

Syn.: Rhizocarpon atroflavescens Lynge subsp. pulverulentum (Schaer.) Runemark, Rhizocarpon chiastomerum Lettau, Rhizocarpon pulverulentum (Schaer.) Räsänen

Lichenised.

Substrate: intermediate rocks (such as calciferous schists), 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 cool-temperate to arctic-alpine, perhaps circumpolar species found on steeply inclined surfaces of base-rich, or weakly calciferous siliceous rocks near or above treeline, often starting the life-cycle on Pertusaria-species; widespread throughout the Alps.