Psorotichia allobrogensis Hue

Lichenised. Poorly known taxon.
Substrate:
Altitudinal range: from the submediterranean/colline belt (potential vegetation: mixed deciduous forests dominated by Quercus and Carpinus) to the montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies)
Note: a poorly understood species of steeply inclined surfaces of calcareous rocks with some water seepage after rain, mostly at relatively low elevations.
France: Alpes-de-Haute-Provence; Alpes-Maritimes; Savoie; Haute-Savoie;