Abstract
The group of cetrarioid lichens with globose ascospores includes 37 species from eight genera. Phylogenetic analysis, using program PAUP 3.1.1, was carried out on two different data sets – morphological (incl. anatomical and chemical) and molecular characters (ITS1, 5.8S, and ITS2 rDNA sequences) – to verify the correspondence of current taxonomy to the probable evolution of the taxa involved. The paraphyletic nature of the genus Allocetraria in regard to two species of Dactylina is assumed based on morphological characters. Still, the separation of these genera is strongly supported by the analysis of molecular data. The genus Tuckermannopsis (11 species) is paraphyletic in regard to Esslingeriana idahoensis and “Nephromopsis” weii. Monophyletic origin can be declared only for the Tuckermannopsis ciliaris group. The analysis based on molecular characters exhibits the monophyletic origin of the group including three Tuckneraria species. Monophyly of the genus Ahtiana was not supported by the analysis of morphological data. (Less)
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