Lichen with a conspicuous thalline exciple that contrasts with the mostly orange colour of the discs. In Europe, it is a widespread and locally abundant lichen with a relatively wide ecological amplitude. In the Czech Republic, it now occurs sparsely or rarely, usually in mountain foothills and mountain areas. In the past, it used to be more abundant, but its occurrence has significantly been reduced by acid rain. It grows on a bark of various woody plants (most often ash and aspen) in nitrophilous communities of the Xanthorion alliance, often accompanied by C. cerinelloides and Xanthoria parietina. A similar species of C. monacensis is basiphilious and avoids communities of the Xanthorion alliance.taxonomic classification:
All records: 39, confirmed 20. One click on a selected square displays particular record(s), including their source(s).