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Agaricales: Pluteaceae), with Description of Twelve New Species Phytotaxa 180 (1): 001–085 ISSN 1179-3155 (print edition) www.mapress.com/phytotaxa/ PHYTOTAXA Copyright © 2014 Magnolia Press Monograph ISSN 1179-3163 (online edition) http://dx.doi.org/10.11646/phytotaxa.180.1.1 PHYTOTAXA 180 Molecular phylogeny and phylogeography of Holarctic species of Pluteus section Pluteus (Agaricales: Pluteaceae), with description of twelve new species ALFREDO JUSTO1, EKATERINA MALYSHEVA2, TATIANA BULYONKOVA3, ELSE C. VELLINGA4, GERRY COBIAN5, NHU NGUYEN6, ANDREW M. MINNIS7 & DAVID S. HIBBETT8 1Clark University, Biology Department, 950 Main St., Worcester, Massachusetts 01610, U.S.A; [email protected] 2 Komarov Botanical Institute of the Russian Academy of Sciences, Prof. Popova Str. 2, St Petersburg, RUS-197376, Russia; [email protected] 3A. P. Ershov Institute of Informatics Systems of the Russian Academy of Sciences, Acad. Lavrentjev pr., 6, Novosibirsk, RUS-630090, Russia; [email protected] 4 Plant and Microbial Biology, University of California at Berkeley, Berkeley, California 94720-3102, U.S.A; [email protected] 5Botany Department, University of Hawaii at Manoa, Honolulu, Hawaii 96822, USA; [email protected] 6Department of Plant Biology, University of Minnesota, Twin Cities, St. Paul, MN, USA; [email protected] 7USDA-U.S. Forest Service, Center for Forest Mycology Research, One Gifford Pinchot Dr., Madison, Wisconsin 53726, USA; [email protected] 8Clark University, Biology Department, 950 Main St., Worcester, Massachusetts 01610, U.S.A; [email protected] Magnolia Press Auckland, New Zealand Accepted by Genevieve Gates: 21 Aug. 2013; published: 24 Sept. 2014 1 ALFREDO JUSTO, EKATERINA MALYSHEVA, TATIANA BULYONKOVA, ELSE C. VELLINGA, GERRY COBIAN, NHU NGUYEN, ANDREW M. MINNIS & DAVID S. HIBBETT Molecular phylogeny and phylogeography of Holarctic species of Pluteus section Pluteus (Agaricales: Pluteaceae), with description of twelve new species (Phytotaxa 180) 85 pp.; 30 cm. 24 Sept 2014 ISBN 978-1-77557-495-8 (paperback) ISBN 978-1-77557-496-5 (Online edition) FIRST PUBLISHED IN 2014 BY Magnolia Press P.O. Box 41-383 Auckland 1346 New Zealand e-mail: [email protected] http://www.mapress.com/phytotaxa/ © 2014 Magnolia Press All rights reserved. No part of this publication may be reproduced, stored, transmitted or disseminated, in any form, or by any means, without prior written permission from the publisher, to whom all requests to reproduce copyright material should be directed in writing. This authorization does not extend to any other kind of copying, by any means, in any form, and for any purpose other than private research use. ISSN 1179-3155 (Print edition) ISSN 1179-3163 (Online edition) 2 • Phytotaxa 180 (1) © 2014 Magnolia Press JUSTO ET AL. Table of contents Abstract . 3 Introduction . 3 Material and Methods . 4 Results . 5 Taxonomic Part . 15 I. cervinus clade . 19 II. pouzarianus clade . 34 III. brunneidiscus clade. 46 IV. petasatus clade. 52 V. salicinus clade. 60 VI. atromarginatus clade. 69 Discussion . 75 Identification keys . 78 Acknowledgements . 81 References . 82 Abstract The taxonomy and phylogeography of Pluteus section Pluteus in the Holarctic region was investigated using morphological and molecular data. Over 300 specimens spanning the major areas of boreal and temperate forests of the Northern Hemisphere were studied and nrITS and tef1 were obtained for phylogenetic analyses. In order to stabilize the taxonomy of the group all available type collections were studied and, if possible, sequenced. A total of 26 species occurring in Eurasia and North America were recovered in the phylogenetic analyses. Twelve species are described as new (Pluteus rangifer, P. elaphinus, P. hibbettii, P. eos, P. orestes, P. methvenii, P. shikae, P. kovalenkoi, P. leucoborealis, P. sepiicolor, P. oreibatus, P. atrofibrillosus), one is provisionally named (P. parilis) and one variety is raised to species rank (P. americanus). In many cases separation of the species based on morphology alone is challenging. In general, tef1 distinguishes the species better than nrITS. Structured infraspecific genetic variation was detected in the nrITS phylogenies for five species (P. atromarginatus, P. hibbettii, P. orestes, P. primus and P. shikae) and in the tef1 phylogenies for P. cervinus. Phylogeographic patterns are strikingly different among the species in this group and include widespread Holarctic species, exclusively Palearctic, putative disjuncts and endemics in each Holarctic subregion (Eastern/Western Palearctic and Nearctic). Identification keys are provided for each subregion. Introduction The taxonomy of the genus Pluteus Fr. has recently been revised using molecular phylogenies, which essentially upheld the morphologically recognized sections (Pluteus, Celluloderma Fayod and Hispidoderma Fayod) with minor rearrangements (Justo et al. 2011a, 2011b). Section Pluteus Fr. accommodates the species with metuloid hymenial cystidia and a pileipellis organized as a cutis, and includes the type species of the genus, Pluteus cervinus (Schaeffer) Kummer (1874: 138) or “deer mushroom”. Pluteus cervinus is commonly depicted in popular field guides (e.g. Bessette et al. 1997; Phillips 2010) and websites (e.g. http://mushroomobserver.org/; http:// www.mushroomexpert.com/pluteus_cervinus.html) although it has been suspected for a long time to be a complex of several species (Singer 1956). The questions about the actual number of species in section Pluteus that occur in the Northern Hemisphere, the morphological characters that might be used to separate them and the correct names that should be applied to these taxa have baffled mycologists for decades. Studies on section Pluteus in Europe (Kühner & Romagnesi 1953; Singer 1956; Orton 1986; Bonnard 1986, 1987, 2001;Vellinga 1990) have recognized around thirteen species, with numbers varying depending on taxonomic opinion, and with as many as seven described in the last three decades (Singer 1984; Bonnard 1986, 1987, 1991, 2001; Deparis 2003; Justo & Castro 2007a,b). In North America, section Pluteus has received considerable attention (Murill 1917; Singer 1956; Smith & Stuntz 1958; Banerjee & Sundberg 1993, 1995). A total of 18 species have been reported, again with discrepancies depending on the taxonomic concepts of the different authors. Furthermore, many species names based on European material (P. atromarginatus, P. cervinus, P. pellitus, P. patricius, P. petasatus, P. pouzarianus, P. salicinus) have been applied to North American collections (Banerjee & Sundberg 1995; Rodríguez 2013). HOLARCTIC SPECIES OF PLUTEUS SECTION PLUTEUS Phytotaxa 180 (1) © 2014 Magnolia Press • 3 to DSH. U.S. Forest Service funds contributed to this work. The study of Russian collections was supported by the Russian Foundation for Basic Research (projects № 12-04-33018 and № 13-04-00838). References Banerjee, P. & Sundberg, W.J. (1993) Three new species and a new variety of Pluteus from the United States. Mycotaxon 47: 389–394. Banerjee, P. & Sundberg, W.J. (1995) The genus Pluteus section Pluteus (Pluteaceae, Agaricales) in the midwestern United States. Mycotaxon 53: 189–246. Batsch, A.J.G.K. (1786) Elenchus fungorum. Continuatio prima. Joannem J. Gebauer, Halae Magdeburgicae, 280 pp. Beatty, G.E. & Provan, J. (2013) Post-glacial dispersal, rather than in situ glacial survival, best explains the disjunct distribution of the Lusitanian plant species Daboecia cantabrica (Ericaceae). Journal of Biogeography 40: 335–344. http://dx.doi.org/10.1111/j.1365-2699.2012.02789.x Benson, D.A., Karsch-Mizrachi, I., Lipman, D.J., Ostell, J. & Sayers, E.W. (2011) GenBank. Nucleic Acids Research 39: D32–D327. http://dx.doi.org/10.1093/nar/gkr1202 Berkeley, M.J. (1845) Decades of fungi. Decades VIII–X. Australian and North American fungi. London Journal of Botany 4: 298–315. Berkeley, M.J. & Broome, C.E. (1871) The fungi of Ceylon (Hymenomycetes from Agaricus to Cantharellus). The Journal of the Linnean Society Botany 11: 494–567. Berkeley, M.J. & Curtis M.A. (1849) Decades of fungi. Decades XXI–XXII. North and South Carolina Fungi. Hooker's Journal of Botany and Kew Garden Miscellany 1: 97–104. Bessette, A.E., Bessette A.R & Fischer, D.W. (1997) Mushrooms of Northeastern North America. Syracuse University Press, 582 pp. Bonnard, J. (1986) Pluteus lidipocystis sp. nov. Mycologia Helvetica 2: 35–42. Bonnard, J. (1987) Pluteus brunneoradiatus sp. nov. Mycologia Helvetica 2: 141–154. Bonnard, J. (1988) Les cystides de la section Pluteus (Agaricales). Mycologia Helvetica 3: 53–72. Bonnard, J. (1991) Pluteus primus sp. nov. (Agaricales, Basidiomycetes) Mycologia Helvetica 4: 169–178. Bonnard, J. (1993) Clé provisoire des Plutées européens à boucles. Mycologia Helvetica 6: 203–205. Bonnard, J. (1995) Pluteus pellitus désignation d’un néotype (Section Pluteus, Agaricales, Basidiomycetes). Mycologia Helvetica 7: 97–103. Bonnard, J. (2001) Pluteus albineus sp. nov. (Agaricales, Basidiomycetes). Mycologia Helvetica 11: 131–136. Boudier, J.L.E. (1905) Icones Mycologicae, ou Iconographie des champignons de France principalement Discomycetes avec texte descriptif. P. Klincksieck, Paris, 193 pp. Buyck, B. & Hofstetter, V. (2011) The contribution of tef-1 sequences to species delimitation in the Cantharellus cibarius complex in the southeastern USA. Fungal Diversity 49: 35–46. http://dx.doi.org/10.1007/s13225-011-0095-z Carlson, A., Justo, A. & Hibbett, D.S. (2014) Species delimitation in Trametes: a comparison of ITS, RPB1, RPB2 and TEF1 gene phylogenies. Mycologia (in press). http://dx.doi.org/10.3852/13-275
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