Calicium montanum Tibell

A lichen with a markedly developed grey-white thallus and low apothecia covered by white pruina. Its usual substrate is a hard wood of coniferous (typically pine) or deciduous (oak and chestnut) trees, but sometimes it grows also on a bark. The species has been described relatively recently from southwestern and central Europe (Tibell 1999) and afterwards reported from several countries also out of Europe (see for example Šoun 2010). In central Europe, it usually occurs in well-lit relic forests. In southwestern Europe, C. montanum can be seen in an extensively managed landscape rich in old trees as well. Its first record from the Czech Republic is from a decaying pine tree in a relic pine forest near Třísov in the Blanský les Protected Landscape Area. Later, it was found in the Šumava Mountains, in Týřov in the Křivoklát region and Podyjí.

Literature: Tibell L. (1999): Two new species of Calicium from Europe. – Mycotaxon 70: 431–443. Šoun J. (2010): První nález Calicium montanum v České republice. – Bryonora 46: 19–23.

Ascomycota → Lecanoromycetes → Caliciales → Caliciaceae → Calicium