Verrucula helvetica (B. de Lesd.) Nav.-Ros. & Cl. Roux

Syn.: Dermatocarpon helveticum (B. de Lesd.) Frey, Endopyrenium helveticum B. de Lesd., Verrucaria helveticorum Zehetl. non Verrucaria helvetica B. de Lesd.
Lichenised.
Substrate:
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: parasitic on Caloplaca cirrochroa; certainly more widespread in the Alps, but largely overlooked.
Austria: Steiermark; Germany: Oberbayern; France: Alpes-de-Haute-Provence; Alpes-Maritimes; Vaucluse;