LICHALP

Polysporina ferruginea (Lettau) M. Steiner ex Kantvilas

Syn.: Polysporina simplex (Taylor) Vězda f. ferruginea (Lettau) Clauzade & Cl. Roux, Sarcogyne simplex (Taylor) Nyl. f. ferruginea Lettau

Lichenised. Poorly known taxon.

Substrate: siliceous rocks, metal-rich siliceous rocks

Altitudinal range: from the subalpine belt (potential vegetation: open, taiga-like forests dominated by Larix decidua and/or Pinus cembra and Rhododendron) 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 basic or slightly calciferous siliceous rocks, probably lichenicolous on an as yet unidentified host, later forming an autonomous thallus. Perhaps a synonym of P. subfuscescens, but a well-distinct species according to Roux.