LICHALP

Usnea longissima Ach.

Syn.: Dolichousnea longissima (Ach.) Articus

Lichenised.

Substrate: bark

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: a mainly cool-temperate to boreal-montane species found on branches of old (mostly coniferous) trees in closed, semi-natural forests in areas with high rainfall and frequent fog; most records are historical, presently the species is restricted to a few localities and very much declining.