Rhizocarpon epispilum (Nyl.) Zahlbr.

Syn.: Buellia epispila (Nyl.) B. de Lesd., Lecidea epispila Nyl., Rhizocarpon superstratum J. Steiner
Lichenised.
Substrate:
Altitudinal range: from the mesomediterranean belt (potential vegetation: evergreen broad-leaved forests dominated by Quercus ilex) to the submediterranean/colline belt (potential vegetation: mixed deciduous forests dominated by Quercus and Carpinus)
Note: on sheltered surfaces of siliceous rocks wetted by rain, starting the life-cycle on thalli of Pertusaria below the montane belt; in the study area so far known only from the limit of the SW Pre-Alps (France).
France: Vaucluse; Italy: Liguria;