LICHALP

Hypocenomyce scalaris (Ach.) M. Choisy

Syn.: Biatora ostreata (Hoffm.) Th. Fr., Lecidea ostreata (Hoffm.) Schaer., Lecidea scalaris (Ach.) Ach., Lichen scalaris Ach., Psora ostreata Hoffm., Psora scalaris (Ach.) Hook.

Lichenised.

Substrate: bark, lignum, siliceous rocks

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 boreal-montane, circumpolar lichen found on acid bark, especially of conifers, but also on Castanea and on lignum, including charred wood; widespread and locally common throughout the Alps.