Gyalecta geoica (Wahlenb. ex Ach.) Ach.

A calciphilous microlichen, growing on mosses or on decomposing plant residues (eventually humus) in crevices of moderately shaded rocks. In central Europe, this species occurs in the naturally rocky habitats of limestone areas at any elevation. There are historical records of its occurrence from three Moravian localities: the Valova skála Rock close to Vsetín, the Bílá skála Rock in the Šumperk region, and the Drásovský kopeček Hill close to Brno (Vězda 1958). In the last-mentioned locality, the species was confirmed at the end of the last century (Vězda 1997). Recently, it has been reported from Moravský kras and from limestones close to the castle Rabí in southern Bohemia.

Literature: Vězda A. (1958): Československé druhy rodu Gyalecta a Pachyphiale s klíčem a přehledem evropských druhů. – Sborník Vysoké školy zemědělské a lesnické v Brně 1958/1: 21–56. Vězda A. (1997): Lichenes rariores exsiccati. Fasciculus quartus tricessimus (numeris 311−340). − Brno.

taxonomic classification:

Ascomycota Lecanoromycetes Ostropales Gyalectaceae Gyalecta


Red list:CR – critically endangered

Occurrence in the Czech Republic

All records: 7, confirmed 6. 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. 2020–2022