LICHALP

Caloplaca havaasii H. Magn.

Syn.: Flavoplaca havaasii (H. Magn.) Arup, Frödén & Søchting

Lichenised.

Substrate: siliceous rocks, intermediate rocks (such as calciferous schists)

Altitudinal range: from the subalpine belt (potential vegetation: open, taiga-like forests dominated by Larix decidua and/or Pinus cembra and Rhododendron) to the alpine belt (potential vegetation: treeless Alpine grasslands and tundras, to the lower limit of perennial snow and the equilibrium line of glaciers)

Note: a species with spreading thalli consisting of scattered, verruciform to squamulose, orange-red areolae, apothecia usually one per areolae, with persistent margins and finally sessile; on steep faces of siliceous schists at high elevations; rare in the Alps.