The rarest representative of the genus Punctelia in the Czech Republic. Its occurrence was first recorded only in 2016 (Rokycany region, Bohemian Karst; Šoun et al. 2017), and it was later found also in the Plzeň region. Unlike the other two, more common species, it has a black lower surface of the lobes (although the marginal parts may be light brown) and contains gyrophoric acid in the medulla. It is very similar to P. subrudecta and may therefore be partly overlooked. Its distribution pattern is predominantly Atlantic-Mediterranean. However, it has been spreading inland recently, similar to Flavoparmelia soredians, most likely in connection with climate changes. It grows on the bark of deciduous trees in well-lit habitats like the other two Punctelia species. There are numerous historical records from our territory under the names Imbricaria or Parmelia borreri, which in fact refer to P. jeckeri and P. subrudecta (Lajblová & Malíček 2024).
Literature: Šoun J., Bouda F., Kocourková J., Malíček J., Palice Z., Peksa O., Svoboda D. & Vondrák J. (2017): Zajímavé nálezy lišejníků z čeledi Parmeliaceae v České republice. – Bryonora 60: 46–64. Lajblová M. & Malíček J. (2024): Terčovky rodu Punctelia v České republice [The genus Punctelia in the Czech Republic]. – Bryonora 73: 1–12.
taxonomic classification:Ascomycota → Lecanoromycetes → Lecanorales → Parmeliaceae → Punctelia
Red List (Malíček 2023):C2 – strongly endangered
Occurrence in the Czech Republic
All records: 7, confirmed 7. One click on a selected square displays particular record(s), including their source(s).