LICHALP

Caloplaca flavocitrina (Nyl.) H. Olivier

Syn.: Caloplaca citrina (Hoffm.) Th. Fr. var. flavocitrina (Nyl.) Walt. Watson, Flavoplaca flavocitrina (Nyl.) Arup, Frödén & Søchting, Lecanora flavocitrina Nyl.

Lichenised.

Substrate: calciferous rocks, 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. citrina-group mainly occurring on limestone, concrete and mortar, with a yellow to orange-yellow, areolate thallus, the areoles with marginal soralia, but often fertile; several records of this common, widespread and ecologically wide-ranging species might be filed under C. citrina. The entire group needs a thorough revision in the Alps.