Thelenella muscorum (Fr.) Vain.

Thelenella muscorum grows on moribund bryophytes, on which it forms pale glossy, membrane-like thalli with very inconspicuous, immersed, pale brown perithecia containing muriform ascospores. It is found on nutrient-enriched substrates, such as various calcareous rocks, soil and also basal parts of older deciduous trees; it prefers lit sites. In the Czech Republic, it was recently recorded mainly in lowland natural habitats. Occurrence on epiphytic bryophytes in wetter mountain habitats is known in Germany (Wirth et al. 2013).

A specific lichenicolous fungus, Stigmidium humidum with conspicuous dark perithecia, is associated with T. muscorum (Pérez-Ortega et al. 2010) and may indirectly reveal its presence.

Literature: Pérez-Ortega S., Halici M. G., Knudsen K. & Candan M. (2010): A new species of Stigmidium sensu stricto on Thelenella muscorum. – Lichenologist 42: 397–403. Wirth V., Hauck M. & Schultz M. (2013): Die Flechten Deutschlands. – Ulmer, Stuttgart.

taxonomic classification:

Ascomycota Lecanoromycetes Ostropales Thelenellaceae Thelenella

most frequented synonyms:Chromatochlamys muscorum

Red List (Liška & Palice 2010):VU – vulnerable
Red List (Malíček 2023):C2 – strongly endangered

Occurrence in the Czech Republic

All records: 14, confirmed 12. 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