Abstract
A new classification of several clitocyboid taxa is here proposed to accommodate results from multigenic phylogenetic inference. The analysis of ITS rDNA as well as a combined dataset including 18S and 28S rDNA, tef1 and rpb2 data, support significantly a shared monophyletic origin of the genera Pseudoclitocybe, Musumecia and Pogonoloma, and the species Clitocybe alexandri and C. harperi. The new family Pseudoclitocybaceae is here proposed to name this clade, characterized by the presence of loop-like clamp connections in most species, absence of cystidia, and parallel hymenophoral trama with broad, cylindrical hyphae with intracellular granulations. The new genera Clitopaxillus and Harmajaea are proposed to accommodate the type species C. alexandri and H. harperi, as well as the combination H. wellsiae. In addition, two new species are described: C. fibulatus has a differential distribution of clamp connections in the basidiome, while H. guldeniae is, by now, an exclusively European taxon with brownish pileus, somewhat decurrent gills, ovoid spores and basidia longer than those of H. harperi. Finally, the species concept within Pseudoclitocybe and Pogonoloma is discussed and descriptions of the most representative species are provided.
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Acknowledgements
We are grateful to Raymond Archambault, Didier Borgarino, Tor Erik Brandrud, Marco Clericuzio, Philippe Clowez, Guillaume Eyssartier, Jean-Pierre Gavériaux, Gro Gulden, Didier Huart, Gary A. Laursen, Vello Liiv, Jean-Marc Moingeon, Ronald Pastorino, Carlos Pérez del Amo, Christian Schwarz, Alessia Tatti, Jukka Vauras, and Øyvind Weholt, for providing samples, images, and/or ecological data of the species studied, as well as Reinhard Berndt (herbarium ZT, Zürich) for the loan of an isotype of Pseudoclitocybe sphagneti, and Régis Courtecuisse and Christophe Lécuru (herbarium LIP, Lille) for having put their own material as well as Marcel Bon’s collections and unpublished notes at our disposal. We thank also Jean-Michel Bellanger, Marisol Sánchez-García, and Brandon Matheny, for providing useful data and DNA sequences for the present work, and Shaun Pennycook for his expert advice about nomenclature of Pogonoloma macrorhizum.
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Alvarado, P., Moreau, PA., Dima, B. et al. Pseudoclitocybaceae fam. nov. (Agaricales, Tricholomatineae), a new arrangement at family, genus and species level. Fungal Diversity 90, 109–133 (2018). https://doi.org/10.1007/s13225-018-0400-1
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DOI: https://doi.org/10.1007/s13225-018-0400-1