One of the most common genus members with prominent lobes and fertile thalli. It grows on calcareous rocks, calcareous soil, and on bryophytes, in both sunny and shaded habitats from lowlands to mountains. More common it is in natural habitats, but occurs also in anthropogenic habitats. It is a relatively common lichen in Europe. In the Czech Republic, E. tenax is abundant in areas rich in calcareous rocks. It is a relatively variable species. A similar E. bachmannianum, differing in crenulate apothecial margins and larger ascospores, might also occur in the country.taxonomic classification: most frequented synonyms:Collema tenax
All records: 123, confirmed 93. One click on a selected square displays particular record(s), including their source(s).