LICHALP

Porpidia contraponenda (Arnold) Knoph & Hertel

Syn.: Lecidea contraponenda Arnold

Lichenised.

Substrate: siliceous rocks

Altitudinal range: from the montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies) to the subalpine belt (potential vegetation: open, taiga-like forests dominated by Larix decidua and/or Pinus cembra and Rhododendron)

Note: on siliceous rocks near the ground, e.g. on large pebbles, in humid-moist situations, in open forests on track sides and in shrublands, most frequent in upland areas but generally rare.