The only strictly calciphilous Thelocarpon species in the Czech Republic. It forms apothecia immersed in clayey soil. Its taxonomy is unresolved, sometimes it is placed in the monotypic genus Athelium. Its only Czech locality is a former quarry in Český kras (the Bohemian Karst).
Literature: Malíček J., Palice Z. & Vondrák J. (2014): New lichen records and rediscoveries from the Czech Republic and Slovakia. – Herzogia 27: 257–284.taxonomic classification: most frequented synonyms:Athelium imperceptum
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