LICHALP

Caloplaca scotoplaca (Nyl.) H. Magn.

Syn.: Caloplaca caesiorufa auct. non (Ach.) Flagey, Lecanora scotoplaca Nyl., Rufoplaca scotoplaca (Nyl.) Arup, Søchting & Frödén

Lichenised.

Substrate: siliceous rocks

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 species of the C. arenaria-group with a dark grey to blackish, minutely areolate thallus, and usually numerous, small, rusty-brown apothecia with concolorous margins and broadly ellipsoid ascospores with septal thickening measuring ⅓-½ of the total length; on siliceous rocks in slightly manured places; overall distribution holarctic, in the Alps insufficiently documented, but evidently not common.