LICHALP

Bacidia caesiomarginata (Kernst.) Lettau

Syn.: Bilimbia caesiomarginata Kernst.

Lichenised.

Substrate: calciferous rocks, intermediate rocks (such as calciferous schists), living mosses

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 apothecial margins covered with a bluish-grey pruina when young, and 1-3-septate, elongated-oblong ascospores; on limestone and overgrowing bryophytes in shaded situations, e.g. within subalpine forests; apparently rather rare.