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 mossy siliceous rocks with a prolonged water seepage after rain; described from the Italian Alps and also reported from France (outside the Alps); the type material, from Mt. Sobretta, was overgrowing epiphytic mosses on schist, in the alpine belt.
