Buellia stellulata (Taylor) Mudd

A species with tiny black apothecia immersed in white thallus with sharply cropped areoles (so-called rimose thallus). Most of all, it resembles B. aethalea and B. spuria from whose it differs in specific secondary metabolites: atranorin, confluentic acid and 2‘-O-metylperlatolic a­cid.

Buellia stellulata may be found on siliceous volcanic and even calcareous rocks, including anthropogenic substrates. It is known, for example, as a pioneer on stones (Wirth et al. 2013). In Europe, it is a thermophilic species, more common only in the Atlantic part, elsewhere rare. It was reported several times from the Czech Republic in the past (see the catalogue by Vězda & Liška 1999) but these data require revision.

Literature: Scheidegger C. (1993): A revision of european saxicolous species of the genus Buellia De Not. and formerly included genera. – Lichenologist 25: 315–364. Wirth V., Hauck M. & Schultz M. (2013): Die Flechten Deutschlands. – Ulmer, Stuttgart.

taxonomic classification:

Ascomycota Lecanoromycetes Caliciales Caliciaceae Buellia

Red List (Liška & Palice 2010):DD – data deficient
Red List (Malíček 2023):C1 – critically endangered

Occurrence in the Czech Republic

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Altitude preferences

Distribution Timeline

Substrate type

Substrate preferences

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