Caloplaca tenuata (Nyl.) Zahlbr.
Syn.: Lecanora tenuata (Nyl.) Nyl., Placodium tenuatum Nyl.
Lichenised.
Substrate: calciferous rocks
Altitudinal distribution: submediterranean/colline belt (potential vegetation: mixed deciduous forests dominated by Quercus and Carpinus)
Note: an often misunderstood taxon with the appearance of a minute, lobate Caloplaca of a yellow-orange colour and ascospores whose septum is c. ΒΌ of the total spore length; on very sunny surfaces of limestone in the Mediterranean region, with some records from the Western Alps only, but certainly more widespread.
France: Alpes-de-Haute-Provence; Alpes-Maritimes; Vaucluse; Var;
