LICHALP

Miriquidica nigroleprosa (Vain.) Hertel & Rambold var. liljenstroemii (Du Rietz) Owe- Larss. & Rambold

Syn.: Lecidea liljenstroemii Du Rietz, Miriquidica liljenstroemii (Du Rietz) R. Sant.

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: this variety differs from var. nigroleprosa in the whitish to pale grey, dull thallus composed of thick, contiguous areoles with convex soralia, and in the secondary chemistry (psoromic additional to miriquidic acid, and therefore medulla Pd+ yellow); on siliceous rocks, in the Alps often in Rhizocarpon alpicola associations; widespread in Europe but often not distinguished; in the Alps mainly from the subalpine to the lower alpine belt.