LICHALP

Pertusaria pupillaris (Nyl.) Th. Fr.

Syn.: Lecanora pupillaris Nyl.

Lichenised.

Substrate: lignum, bark

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 temperate to southern boreal-montane, perhaps holarctic lichen found on hard lignum and smooth bark; overlooked, being almost always sterile, and perhaps more widespread, albeit never common, in upland areas.