LICHALP

Rhizoplaca subdiscrepans (Nyl.) R. Sant.

Syn.: Lecanora subdiscrepans (Nyl.) Stizenb., ?Squamaria chrysoleuca (Sm.) Duby var. lecanorea Anzi, Squamaria chrysoleuca (Sm.) Duby var. subdiscrepans Nyl.

Lichenised.

Substrate: siliceous rocks, intermediate rocks (such as calciferous schists)

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 the top of calciferous or basic siliceous boulders frequently visited by birds, with optimum above treeline.