LICHALP

Caloplaca dichroa Arup

Syn.: Flavoplaca dichroa (Arup) Arup, Frödén & Søchting

Lichenised.

Substrate: calciferous 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 recalling C. citrina in developing areoles dissolving more or less completely into blastidia and granules, usually fertile and then the thick-walled ascospores are diagnostic, often occurring in a yellow and an orange colour form; on limestone or more rarely on similar anthropogenic substrates, widespread in the Alps, but distribution still insufficiently documented.