Thelopsis flaveola Arnold

An inconspicuous microlichen with immersed, pale yellow to ochraceous apothecia. It is easily recognizable microscopically due to hundreds of small halonate spores in each ascus. It occurs in two distinct habitats: on shrubs in the subalpine belt, at places with long-lasting snow cover above the upper treeline and on wet weathered nutrient rich bark of deciduous trees, mainly beeches, in old-growth forests (Vězda 1968). Rare in central Europe. In the Czech Republic so far known from two forest sites in the Šumava Mts.

Literature: Vězda A. (1968): Taxonomische Revision der Gattung Thelopsis Nyl. (Lichenisierte Fungi). – Folia Geobotanica et Phytotaxonomica 3: 363–406.

taxonomic classification:

Ascomycota Lecanoromycetes Ostropales Stictidaceae Thelopsis

Red List (Liška & Palice 2010):CR – critically endangered
Red List (Malíček 2023):C1 – critically endangered

Occurrence in the Czech Republic

All records: 3, confirmed 3. One click on a selected square displays particular record(s), including their source(s).


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Altitude preferences

Distribution Timeline

Substrate type

Substrate preferences

© Botanický ústav AV ČR, v. v. i. 2020–2024