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: a species of the C. citrina-group with a thallus consisting of subumbilicate, minute squamules with margins divided into tiny lobes, developing marginal soralia; on various rock types close to the sea; in the study area so far known from a single locality in the Western Alps.
