LICHALP

Caloplaca rouxii Gaya, Nav.-Ros. & Llimona

Syn.: Caloplaca murorum auct. var. miniata (Hoffm.) Ozenda & Clauzade, Caloplaca saxicola (Hoffm.) Nordin subsp. miniata (Hoffm.) Clauzade & Cl. Roux, Lichen miniatus Hoffm. non L.

Lichenised.

Substrate: calciferous 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 with an Alpine distribution, growing mainly on the top of calcareous boulders in sunny and nutrient-enriched sites, often with C. biatorina and Xanthoria elegans; probably much more widespread in the Alps.