Parmelia pinnatifida Kurok.

Parmelia pinnatifida is the least known species from the P. omphalodes agg. It grows on siliceous rocks and screes from lowlands to mountains. It is widespread throughout the entire northern hemisphere. Due to various concepts of determination characteristics in relation to P. omphalodes, the taxonomy of P. pinnatifida has been changing and the species was often not distinguished in the past. A recent study (Ossowska et al. 2019) supports by molecular methods its recognition as a species and considers the presence of pseudocyphellia at the margins of primary lobes as a reliable identification characteristic. The species distribution in the Czech Republic is poorly documented and the revision of herbaria items is needed. Recently, the lichen has been recorded in the Brdy Hills, Krkonoše and Jizerské hory Mts.

Literature: Ossowska E., Guzow-Krzemińska B., Kolanowska M., Szczepańska K., Kukwa M. (2019): Morphology and secondary chemistry in species recognition of Parmelia omphalodes group – evidence from molecular data with notes on the ecological niche modelling and genetic variability of photobionts. – MycoKeys 61: 39–74.

Ascomycota → Lecanoromycetes → Lecanorales → Parmeliaceae → Parmelia