Umbilicaria ruebeliana (Du Rietz & Frey) Frey

Umbilicaria ruebeliana (Du Rietz & Frey) Frey

Syn.: Gyrophora ruebeliana Du Rietz & Frey, Omphalodiscus ruebelianus (Du Rietz & Frey) Schol.

Lichenised.

Substrate: siliceous rocks

Altitudinal range: from the montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies) to the nival belt (above the lower limit of perennial snow and glaciers)

Note: on steeply inclined to underhanging, often south- or west-facing surfaces of siliceous rocks above treeline.

Austria: Tirol; Salzburg; Switzerland: Bern; Graubünden; Ticino; Valais; France: Alpes-de-Haute-Provence; Haute-Alpes; Alpes-Maritimes; Italy: Trentino Alto Adige; Lombardia; Piemonte; Valle d'Aosta;

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