LICHALP

Caloplaca saxicola (Hoffm.) Nordin

Syn.: Amphiloma murorum Körb. nom.illeg., Callopisma murorum De Not. nom.illeg., Callopisma steropeum (Ach.) Körb., Caloplaca murorum Th. Fr. nom.illeg., Caloplaca tegularis auct. non (Ehrh.) Zahlbr., Gasparrinia murorum Tornab. nom. lleg., Physcia murorum A. Massal. nom.illeg., Placodium murorum DC. nom.illeg., Psora saxicola Hoffm., Xanthoria murorum Th. Fr. nom.illeg.

Lichenised. Poorly known taxon.

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

Altitudinal range: from the mesomediterranean belt (potential vegetation: evergreen broad-leaved forests dominated by Quercus ilex) 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 mainly cool-temperate, much misunderstood and still problematic species occurring both on calcareous and basic siliceous rocks, also in urban areas and on man-made substrata. Many records could refer to C. pusilla.