New and Noteworthy Lichen-Forming and Lichenicolous Fungi 13. A Revision of the Xanthoria Ectaneoides Complex (Xanthorioideae, Teloschistaceae) Including the New Species Xanthoria Pylyporlykii

Abstract

Xanthoria ectaneoides, usually recognised by its secondary sublobules, is circumscribed in a strict sense using spore size and a molecular phylogeny based on ITS-sequences. The species, earlier considered a synonym of X. aureola, forms a subclade with X. coomae and the new species X. pylyporlykii, described here, whereas X. aureola is positioned in the Xanthoria calcicola subclade. The new species X. pylyporlykii is characterised by a combination of characters typical either for Xanthoria ectaneoides or X. coomae.