LICHALP

Gyalidea roseola (Arnold) Lettau

Syn.: Gyalecta roseola 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 periodically wetted faces of siliceous rocks (especially crystalline schists) near creeks and waterfalls in upland areas; an overall rare species, known from a few localities in NW Europe and from the Alps.