LICHALP

Porina mammillosa (Th. Fr.) Vain.

Syn.: Sagedia declivum Bagl. & Carestia, Sagedia trechalea (Nyl.) Arnold, Segestria mammillosa Th. Fr.

Lichenised.

Substrate: siliceous rocks, living mosses, plant debris

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: an arctic-alpine, probably circumpolar species found on bryophytes and plant debris over siliceous substrata.