Rhizocarpon viridiatrum (Wulfen) Körb.

Syn.: Buellia viridiatra (Wulfen) H. Olivier, Diplotomma viridiatrum (Wulfen) Jatta, Lecidea viridiatra (Wulfen) Ach., Lichen viridiater Wulfen, Rhizocarpon subtile Runemark
Lichenised.
Substrate: siliceous rocks,
Altitudinal range: from the mesomediterranean belt (potential vegetation: evergreen broad-leaved forests dominated by Quercus ilex) 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 siliceous rocks with optimum in dry-warm areas, sometimes on roofing tiles, starting the life-cycle on other crustose lichens, with a wide altitudinal range.
Austria: Tirol; Salzburg; Kärnten; Steiermark; Niederösterreich (incl. Wien); Switzerland: Bern; Valais; France: Haute-Savoie; Vaucluse; Var; Italy: Veneto; Trentino Alto Adige; Lombardia; Piemonte; Valle d'Aosta; Liguria; Slovenia: Alpine and Pre-Alpine Slovenia;