LICHALP

Rhizocarpon intersitum Arnold

Syn.: Rhizocarpon birgittae H. Magn., Rhizocarpon diversisporum Hav.

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 rather poorly known species found on inclined to vertical faces of acidic siliceous rocks, often near waterfalls, mostly in upland areas.