Umbilicaria maculata Krzewicka, M.P. Martín & M.A. García
Lichenised.
Substrate: siliceous rocks
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 of the U. cylindrica-group with monophyllous thalli tightly adhering to the rock, the grey to grey-brown upper surface with whitish maculae, a whitish to creamy rhizinate lower surface, and sessile, omphalodisc apothecia; on vertical rock faces of boulders and cliffs in shaded, windy situations at high elevations; rare in the Tatra Mountains, with a single record from the Western Alps (France), but perhaps not recognised elsewhere.
