Thallus smooth, upper surface dark brown, lower surface black. On various siliceous and volcanic substrates, on well-lit or half-shaded rocks and stones. One of the most common Umbilicaria species in Europe as well as in the Czech Republic. Scattered to locally abundant from lowlands to mountains, but most often at middle elevations.
Literature: Lisická E. (1980): Flechtenfamilie Umbilicariaceae Fée in der Tschechoslowakei. – Biologické Práce SAV 26/4: 1–152.taxonomic classification:
All records: 218, confirmed 155. One click on a selected square displays particular record(s), including their source(s).