A conspicuous Rhizocarpon species forming black apothecia in the centre of half-moon-shaped yellow areoles, which are usually densely packed on a black prothallus. Mainly montane morphotypes with more scattered areoles resemble R. ferax, which is much rarer.
R. lecanorinum has a wide ecological amplitude, growing on siliceous rocks from highlands to the highest Czech mountains. Its optimum is in the submontane zone (Černohorský 1965). It prefers exposed places, often dust-impregnated with an abundance of rainfall. Rarely, it also grows on anthropogenic substrates, such as roof tiles (Nimis et al. 20118). The species is common in Europe and in the Czech Republic. It is, however, probably absent from more continental areas.
Literature: Černohorský Z. (1965): Die Verbreitung der Flechte Rhizocarpon lecanorinum Anders in der Tschechoslowakei. – Preslia, 37: 353–362. Nimis P. L., Hafellner J., Roux C., Clerc P., Mayrhofer H., Martellos S. & Bilovitz P. O. (2018): The lichens of the Alps – an annotated checklist. – Mycokeys 31: 1–634.
taxonomic classification:Ascomycota → Lecanoromycetes → Rhizocarpales → Rhizocarpaceae → Rhizocarpon
Red List (Liška & Palice 2010):LC – least concern
Occurrence in the Czech Republic
All records: 357, confirmed 168. One click on a selected square displays particular record(s), including their source(s).