Xanthoria calcicola Oxner

Distinctive orange Xanthoria, in contrast to the similar and common X. parietina, occasionally forms short flat lobes and globose isidia in the central parts of the thallus. Apothecia are rare. It is strictly saxicolous on basic rocks (limestone, diabase), primarily distributed in the Mediterranean. Historically not known from the Czech Republic. First record published in 1998 from the Křivoklát region, specifically Stará Ves village (on a diabase rock) and Křivoklát (on a brick wall). Later also found on Trosky castle ruins in the Český ráj region.

Literature: Kocourková-Horáková J. (1998): Records of new, rare or overlooked lichens from the Czech Republic. – Czech Mycology 50: 223–239.

taxonomic classification:

Ascomycota Lecanoromycetes Teloschistales Teloschistaceae Xanthoria

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

Occurrence in the Czech Republic

All records: 5, confirmed 2. 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