LICHALP

Lecanora albula (Nyl.) Hue var. albula

Syn.: Squamaria albula Nyl.

Lichenised. Poorly known taxon.

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 nival belt (above the lower limit of perennial snow and glaciers)

Note: a species based on a type from the French Alps (Dauphiné), characterised by a relatively thick, whitish thallus with subeffigurate margins and apothecia of the L. polytropa-type, perhaps heterogenous in its current circumscription; on very sunny surfaces of rocks which are very poor in calcium, in warm-dry situations.