Lathagrium undulatum (Laurer ex Flot.) Poetsch var. undulatum
Syn.: Collema laureri Flot., Collema undulatum Laurer ex Flot., Lathagrium laureri (Flot.) Arnold, Synechoblastus laureri (Flot.) Körb., Synechoblastus laureri (Flot.) Körb. var. microphyllinus Anzi
Lichenised.
Substrate: calciferous rocks
Altitudinal range: from the submediterranean/colline belt (potential vegetation: mixed deciduous forests dominated by Quercus and Carpinus) 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 cool-temperate to arctic-alpine, probably circumpolar lichen found on calciferous rocks with some water seepage after rain, mostly in upland areas; widespread throughout the Alps.
Austria: Vorarlberg; Tirol; Salzburg; Kärnten; Steiermark; Oberösterreich; Niederösterreich (incl. Wien); Germany: Oberbayern; Schwaben; Switzerland: Bern; Glarus; Graubünden; Luzern; Schwyz; Ticino; Uri; Unterwalden; Vaud; Valais; France: Alpes-de-Haute-Provence; Haute-Alpes; Alpes-Maritimes; Drôme; Savoie; Haute-Savoie; Vaucluse; Var; Italy: Friuli; Veneto; Trentino Alto Adige; Lombardia; Piemonte; Valle d'Aosta; Liguria; Slovenia: Alpine and Pre-Alpine Slovenia;