The smallest Czech Physconia species, which is highly variable and its atypical forms are easily confused with other species, e.g., P. detersa. It grows on nutrient-rich bark of deciduous trees (typically ash and maple) in forest and non-forest communities. Rarely, it also occurs on mossy rocks. The lichen avoids shaded stands and is sensitive to air pollution and eutrophication. It is widely distributed and relatively common in Europe. In the Czech Republic, P. perisidiosa is scattered from lowlands to mountains, occurring mainly in more forested and less intensively used areas.taxonomic classification:
All records: 210, confirmed 138. One click on a selected square displays particular record(s), including their source(s).