VOLUME 5 JUNE 2020 Fungal Systematics and Evolution PAGES 139–149 doi.org/10.3114/fuse.2020.05.09 Phylogenetic placement and lectotypification of Pseudotryblidium neesii (Helotiales, Leotiomycetes) A. Suija1*, M. Haldeman2, E. Zimmermann3, U. Braun4, P. Diederich5 1Institute of Ecology and Earth Sciences, University of Tartu, Lai 40, Tartu, 51005, Estonia 21402 23rd Street, Bellingham, Washington, USA 3Scheunenberg 46, CH–3251 Wengi, Switzerland 4Martin-Luther-Universität, Institut für Biologie, Bereich Geobotanik, Herbarium, Neuwerk 21, 06099 Halle (Saale), Germany 5Musée national d’histoire naturelle, 25 rue Munster, L–2160 Luxembourg, Luxembourg *Corresponding author:
[email protected] Key words: Abstract: A phylogenetic analysis of combined rDNA LSU and ITS sequence data was carried out to determine the phylogenetic Abies alba placement of specimens identified as Pseudotryblidium neesii. The species forms a distinct clade within Dermateaceae A. grandis (Helotiales, Leotiomycetes) with Rhizodermea veluwiensis and two Dermea species. The geographical distribution of this Dermea species, previously known only from Europe on Abies alba, is extended to north-western North America where it grows Dermateaceae exclusively on A. grandis. The name P. neesii is lectotypified in order to disentangle the complicated nomenclature of the nomenclature species. A new, detailed description of P. neesii with illustrations is provided after comparison of sequenced specimens with phylogeny the type material. Furthermore, the new combination Pseudographis rufonigra (basionym Peziza rufonigra) is made for a Pseudographis fungus previously known as Pseudographis pinicola. Effectively published online: 18 November 2019. Editor-in-Chief Prof. dr P.W. Crous, Westerdijk Fungal Biodiversity Institute, P.O. Box 85167, 3508 AD Utrecht, The Netherlands.