Caloplaca aurantia (Pers.) Hellb.

Syn.: Amphiloma aurantius (Pers.) Müll. Arg., Amphiloma callopismum (Ach.) Körb., Callopisma vulgaris De Not., Caloplaca aurantia (Pers.) Hellb. var. intermedia Zahlbr., Caloplaca aurantia (Pers.) Hellb. var. papillata Poelt, Caloplaca callopisma (Ach.) Th. Fr., Gasparrinia aurantia (Pers.) Syd., Gasparrinia callopisma (Ach.) Syd., Lecanora callopisma Ach., Lichen aurantius Pers., Placodium aurantium (Pers.) Vain., Placodium callopismum (Ach.) Mérat, Variospora aurantia (Pers.) Arup, Frödén & Søchting
Lichenised.
Substrate: calciferous rocks
Altitudinal range: from the mesomediterranean belt (potential vegetation: evergreen broad-leaved forests dominated by Quercus ilex) to the montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies)
Note: a mild-temperate to subtropical species found on a wide variety of calciferous substrata; common in the Mediterranean-submediterranean belts, rarer at higher altitudes, more helio- and thermophytic than the closely related C. flavescens; widespread throughout the Alps, at low elevations.
Austria: Vorarlberg; Tirol; Kärnten; Niederösterreich (incl. Wien); Switzerland: Luzern; Ticino; Valais; France: Alpes-de-Haute-Provence; Haute-Alpes; Alpes-Maritimes; Drôme; Savoie; Haute-Savoie; Vaucluse; Var; Italy: Friuli; Veneto; Trentino Alto Adige; Lombardia; Piemonte; Valle d'Aosta; Liguria;