Acarospora cervina A. Massal.

Syn.: Acarospora glaucocarpa (Ach.) Körb. var. cervina (A. Massal.) Cl. Roux
Lichenised.
Substrate: calciferous 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: a widespread, probably holarctic species found on the top of exposed, more or less calcareous boulders in natural habitats, especially common in dry-continental areas, but with a wide altitudinal range, sometimes considered as a form of A. glaucocarpa. The nomenclature should be studied further: according to Nimis (2016) Massalongo was not describing a species, but proposing a new combination.
Austria: Vorarlberg; Tirol; Salzburg; Kärnten; Steiermark; Oberösterreich; Niederösterreich (incl. Wien); Germany: Oberbayern; Schwaben; France: Alpes-de-Haute-Provence; Haute-Alpes; Alpes-Maritimes; Drôme; Isère; Savoie; Haute-Savoie; Vaucluse; Var; Italy: Friuli; Veneto; Trentino Alto Adige; Lombardia; Piemonte; Valle d'Aosta;