Stereocaulon pileatum Ach.

Syn.: Stereocaulon saxonicum Bachm.
Lichenised.
Substrate: siliceous rocks, acidic soil (mostly on siliceous substrata)
Altitudinal range: from the submediterranean/colline belt (potential vegetation: mixed deciduous forests dominated by Quercus and Carpinus) to the subalpine belt (potential vegetation: open, taiga-like forests dominated by Larix decidua and/or Pinus cembra and Rhododendron)
Note: a cool-temperate to arctic-alpine, circumpolar early coloniser of mineral-rich siliceous rocks, including roofing tiles, in upland areas, but mostly below the alpine belt.
Austria: Salzburg; Kärnten; Steiermark; Niederösterreich (incl. Wien); Switzerland: Bern; Ticino; Italy: Veneto; Lombardia; Piemonte;