Buellia disciformis (Fr.) Mudd

A member of the genus Buellia with a grey-white thin thallus and sessile black apothecia. The species may be confused, for example, with the common Lecidella elaeochroma. It resembles also the rarer B. erubescens, from which it differs in larger spores with characteristically decoloured ends, numerous oil droplets in hymenium and lack of norstictic acid in the thallus.

Buellia disciformis grows on smooth bark of deciduous wooden plants, in the Czech Republic mainly on the beech and hornbeam. It prefers a humid environment and its centre of distribution is in scree forests and beechwoods. Its occurrence at lower elevations is often restricted to climatically suitable river valleys. The species is widespread in Europe, in some localities even very abundant. In the Czech Republic, the lichen has been recorded in many regions from lowlands to mountains but it is usually sparse in its localities.

taxonomic classification:

Ascomycota Lecanoromycetes Caliciales Caliciaceae Buellia

Red List (Liška & Palice 2010):VU – vulnerable
Red List (Malíček 2023):C3 – endangered

Occurrence in the Czech Republic

All records: 32, confirmed 31. One click on a selected square displays particular record(s), including their source(s).


record after the selected year
record before the selected year
records without date
Doubtful and erroneous records are not displayed.
credible record
doubtful record
erroneous record
record without revision

Altitude preferences

Distribution Timeline

Substrate type

Substrate preferences

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