Caloplaca herbidella (Nyl. ex Hue) H. Magn.

Syn.: Blastenia herbidella (Nyl. ex Hue) Servít, Lecidea caesiorufa (Wibel) Ach. f. herbidella Nyl. ex Hue
Lichenised.
Substrate: bark, lignum
Altitudinal range: from the submediterranean/colline belt (potential vegetation: mixed deciduous forests dominated by Quercus and Carpinus) to the subalpine belt (potential vegetation: open, taiga-like forests dominated by Larix decidua and/or Pinus cembra and Rhododendron)
Note: a species found on bark, especially on basal parts of trunks, more rarely on lignum. Populations from the Mediterranean zone (e.g. on Olea and Juniperus) could prove to belong to C. coralliza. According to Vondrák (see Nimis 2016) this species has a broadly Mediterranean distribution and is absent from America, with the easternmost limit in the Caucasus and an isolated population in the Urals, while there are some other (mostly undescribed) species which are acidophilous, growing typically on conifers and lignum, some of which may also occur in the Alps.
Austria: Vorarlberg; Tirol; Salzburg; Kärnten; Steiermark; Oberösterreich; Niederösterreich (incl. Wien); Burgenland; Germany: Oberbayern; Schwaben; Switzerland: Bern; Glarus; Graubünden; Luzern; St. Gallen; Schwyz; Ticino; Uri; Unterwalden; Vaud; Valais; France: Alpes-de-Haute-Provence; Haute-Alpes; Alpes-Maritimes; Drôme; Isère; Haute-Savoie; Var; Italy: Friuli; Veneto; Trentino Alto Adige; Lombardia; Piemonte; Valle d'Aosta; Liguria; Slovenia: Alpine and Pre-Alpine Slovenia; Trnovsky Gozd; Liechtenstein