A predominantly epiphytic lichen with a strong preference for sun-exposed, nutrient-rich habitats. It typically grows on smooth bark of young trunks and branches of deciduous trees (e.g. ash, aspen), eventually also on dusty and eutrophicated sites. Exceptionally, it is reported within pioneer communities on enriched stones (typically on igneous rocks) and on worked timber. In Europe, M. persimilis is probably abundant but partly overlooked. In the Czech Republic, it is currently common in most of the area but historical data are not available. Apart from the fact that the species was probably often confused with other members of the genus, it is thought that its abundance was low in the second half of the 20th century due to acid rain. Forms with light apothecial margins are in the field often hardly distinguishable from the similar M. sambuci.taxonomic classification: most frequented synonyms:Lecanora persimilis
All records: 268, confirmed 257. One click on a selected square displays particular record(s), including their source(s).