Buellia subdisciformis (Leight.) Jatta.

Buellia subdisciformis (Leight.) Jatta.

Syn.: Buellia ryssolea (Leight.) A.L. Sm., Buellia sejuncta J. Steiner, Lecidea ryssolea Leight., Lecidea subdisciformis Leight.

Lichenised.

Substrate: siliceous rocks

Altitudinal range: from the mesomediterranean belt (potential vegetation: evergreen broad-leaved forests dominated by Quercus ilex) to the montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies)

Note: a mild-temperate to humid subtropical species found on siliceous rocks, chiefly Mediterranean-Atlantic in Europe. Austrian and Swiss records from high altitudes are very unlikely.

Austria: ?Kärnten; Switzerland: ?Valais; France: Alpes-de-Haute-Provence; Alpes-Maritimes; Vaucluse; Var;

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