LICHALP

Psorotichia claudelii Hue

Lichenised. Poorly known taxon.

Substrate: calciferous rocks

Altitudinal distribution: montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies)

Note: a species in need of re-evaluation, resembling P. schaereri, but the areolae with a minutely granular surface and with a bluish-grey pruina, like the margins of the apothecia (finally exceeding 0.5 mm in diam); on calcareous rocks, ecology and distribution poorly documented, with a few records from the Western Alps (France).