Caloplaca aegatica Giralt, Nimis & Poelt

Syn.: Caloplaca quercina auct. non Flagey
Lichenised.
Substrate: bark
Altitudinal distribution: submediterranean/colline belt (potential vegetation: mixed deciduous forests dominated by Quercus and Carpinus)
Note: a species with a greyish thallus, relatively large apothecia with golden-yellow margins and orange-red discs, broadly-ellipsoid ascospores (often less than 8 per ascus), and conspicuous pycnidia with blackish ostiolar regions; on bark of broad-leaved trees in Xanthorion-communities; widespread in the Mediterranean region, including Macaronesia, also reported from the Western Alps, at low elevations.
France: Var;