Umbilicaria microphylla (Laurer) A. Massal.

Umbilicaria microphylla (Laurer) A. Massal.

Syn.: Agyrophora microphylla (Laurer) Llano, Gyrophora microphylla (Laurer) Arnold, Umbilicaria atropruinosa Schaer. var. microphylla Laurer

Lichenised.

Substrate: siliceous rocks

Altitudinal range: from the subalpine belt (potential vegetation: open, taiga-like forests dominated by Larix decidua and/or Pinus cembra and Rhododendron) to the nival belt (above the lower limit of perennial snow and glaciers)

Note: on steeply inclined, wind-exposed surfaces of hard siliceous rocks, often forming monospecific stands, with optimum above treeline.

Austria: ?Vorarlberg; Tirol; Salzburg; Kärnten; Steiermark; Switzerland: Bern; Graubünden; Vaud; Valais; France: Alpes-de-Haute-Provence; Haute-Alpes; Alpes-Maritimes; Haute-Savoie; Italy: Trentino Alto Adige; Lombardia; Piemonte; Valle d'Aosta;

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