A typical lichen of exposed purely calcareous rocks, forming circular thalli, often with a missing thallus centre and lobulate margin. It is a Mediterranean species, very rare in the Czech Republic. It was historically documented only from limestones in Moravia: the Moravian karst, the Kotouč hill near Štramberk, the Drásovský kopeček hill and the Květnice nature reserve near Tišnov. Recently, it was confirmed in the Moravian karst and newly found in the Týnčany karst in central Bohemia.
taxonomic classification:Ascomycota → Lecanoromycetes → Peltigerales → Placynthiaceae → Placynthium
All records: 9, confirmed 5. One click on a selected square displays particular record(s), including their source(s).