An inconspicuous crustose species, often with endolithic thallus, but sometimes also epilithic, thin and brown. It resembles Catillaria species in its black apothecia. The lichen grows on calcareous rocks in open habitats from the lowlands to the mountains. The centre of its distribution is in Europe, where it is quite infrequently recorded, most commonly in the Alps (Timdal 1992). In the Czech Republic it is a rare lichen of karst areas.
Literature: Timdal E. (1992): A monograph of the genus Toninia (Lecideaceae, Ascomycetes). – Opera Botanica 110: 1–137.taxonomic classification: most frequented synonyms:Toninia athallina
All records: 4, confirmed 3. One click on a selected square displays particular record(s), including their source(s).