A rarely found, inconspicuous microlichen with red-brown perithecia and specific ecological requirements. In central Europe it usually grows on wet weathered bark of old dying beeches or their torsos, rarely on old oaks, exceptionally also on old conifers. It is usually found in old-growth forests but may also occur in younger forests with older trees. It is more abundant in continuous forest complexes, e. g. in the Carpathians. It might also occur on shaded serpentine rocks. In the Czech Republic, it was historically known from the Bílé Karpaty and Brdy Hills (Vězda 1968). Recently, it was recorded in the Šumava Mts, Blanský les Mts, Novohradské hory Mts, near Hluboká nad Vltavou, in the Třebíč region, Moravian Karst, Slavkovský les and Beskydy Mts. At all the localities in was found on a single or very few trees.
Literature: Vězda A. (1968): Taxonomische Revision der Gattung Thelopsis Nyl. (Lichenisierte Fungi). – Folia Geobotanica et Phytotaxonomica 3: 363–406.taxonomic classification:
All records: 21, confirmed 20. One click on a selected square displays particular record(s), including their source(s).