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P. Brandon Matheny

Associate Professor


2003 PhD, University of Washington


My group’s research interests include fungal systematics, evolution, historical biogeography, and taxonomy of mushroom-forming fungi.

We use natural history collections of mushrooms to investigate their systematic and evolutionary relationships. Sequence data are produced to reconstruct phylogenies, which are used to test classifications, morphological species concepts, and history of diversification patterns of mushroom-forming fungi. We are also interested in the evolution of the ectomycorrhizal (ECM) symbiosis, an important ecological feature, and how this trait has influenced biogeographic distributions and speciation patterns of the fungi involved. Research in our lab also focuses on the identification and taxonomic revision of selected groups of Agaricales. Our current fieldwork emphasizes the accumulation of temperate North American Agaricales and Australian Inocybaceae and closely related taxa. Our lab webpage is currently under construction but soon will be able to provide details on more specific projects, so please stay tuned.


Visit Google Scholar for more publications. (Since 2009)

  • Braaten CC, Matheny PB, Viess DL, Wood MG, Williams J, Bougher NL (2014) Two new species of Inocybe from Australia and North America that include novel secotioid forms. Botany 92: 9-22.
  • Lodge DL, Padamsee M, Matheny PB, Aime MC, Cantrell SA, Boertmann D, Kovalenko A, Vizzini A, Dentinger B, Kirk P, Ainsworth M, Moncalvo J-M, Vilgalys R, Larsson E, Lücking R, Griffith G, Smith M, Norvell LL, Desjardin DE, Redhead SA, Ovrebo CL, Lickey E, Ercole E, Hughes KW, Courtecuisse R, Young A, Binder M, Minnis A, Lindner DL, Ortiz-Sanatan B, Haight J, Læssøe T, Baroni TJ, Geml J, Hattori T (2014) Molecular phyologeny, morphology, pigment chemistry and ecology in Hygrophoraceae (Agaricales). Fungal Diversity 64: 1-99.
  • Ramírez-Cruz V, Guzmán G, Villalobos-Arámbula AR, Rodríguez A, Matheny PB, Sánchez-García, Guzmán-Davalos L (2013) Phylogenetic inference of the psychedelic mushroom genus Psilocybe sensu lato. Botany 91: 573-591.
  • Kõljalg U, Nilsson H, Abarenkov K, Tedersoo L, Taylor FS, Bahram M, Bates ST, Bruns TT, Bengtsson-Palme J, Callaghan TM, Doughas B, Drenkham T, Eberhardt U. Dueñas M, Grebenc T, Griffith GW, Hartmann M, Kirk PM, Kohout P, Larsson E, Lindahl BD, Lücking R, Martín MP, Matheny PB, Nguyen H, Niskanen T, Oja J, Peay KG, Peintner U, Peterson M, Põldmaa K, Saag L, Saar I, Schüßler A, Senés C, Smith ME, Suija A, Taylar DL, Telleria MT, Weiß M, Larsson KH (2013) Towards a unified paradigm for sequence-based identification of Fungi. Molecular Ecology 22: 5271-5277.
  • Kosentka P, Sprague SL, Ryberg M, Gartz J, May AL, Campagna SR, Matheny PB (2013) Evolution of the toxins muscarine and psilocybin in a family of mushroom-forming fungi. PLoS ONE 8(5): e64646.
  • Looney BP, Birkebak JM, Matheny PB (2013) A molecular phylogeny of the genus Auricularia with an emphasis on species from the southeastern United States. North American Fungi 8: 1-25.
  • Birkebak JM, Mayor JR, Ryberg M, Matheny PB (2013) A systematic, morphological, and ecological overview of the Clavariaceae (Agaricales). Mycologia 105: 896-911.
  • Kropp BR, Matheny PB, Hutchison LJ (2013) Inocybe section Rimosae in Utah: phylogenetic affinities and new species. Mycologia 105: 728-747.
  • Ammirati JF, Hughes KW, Liimatainen K, Niskanen T, Matheny PB (2013) Cortinarius hesleri from eastern North America and related species from Europe and western North America. Botany 91: 91-98.
  • Sánchez-García M, Cifuentes-Blanco J, Matheny PB (2013) Revisión taxonómica del género Melanoleuca en México y descripción de especies nuevas. Revista Mexicana de Biodiversidad 84 (Suplemento-Micologia): S111-S127 (invited paper).
  • Matheny PB, Norvell LL, Giles EC (2013) A common new species of Inocybe in the Pacific Northwest with a diagnostic PDAB reaction. Mycologia 105: 436-446.Kennedy PG, Matheny PB, Ryberg M, Henkel TW, Uehling J, Smith ME (2012) Scaling up: examining the macroecology of ectomycorrhizal fungi. Molecular Ecology 21: 4151-4154.
  • Bougher NL, Matheny PB, Gates GM (2012) Five new species and records of Inocybe (Agaricales) from temperate and tropical Australia. Nuytsia 22: 57-74.
  • Ryberg M, Matheny PB (2012) Asynchronous origins of ectomycorrhizal clades of Agaricales. Proceedings of the Royal Society B 279: 2003-2011.
  • Matheny PB, Aime MC, Smith ME, Henkel TW (2012) New species and reports of Inocybe (Agaricales) from Guyana. Kurtziana (special invited issue) 37: 23-39.
  • Matheny PB, Pradeep CK, Vrinda KB, Varghese SP (2012) Auritella foveata, a new species of Inocybaceae (Agaricales) from tropical India. Kew Bulletin 67: 119-125.
  • Baroni TJ, Matheny PB (2011) A re-evaluation of gasteroid and cyphelloid species of Entolomataceae from eastern North America. Harvard Papers in Botany 16: 293-310.
  • Ryberg M, Nilsson RH, Matheny PB (2011) DivBayes and SubT: exploring species diversification using Bayesian statistics. Bioinformatics 27: 2439-2440.
  • Ryberg M, Matheny PB (2011) Dealing with incomplete taxon sampling and diversification of a large clade of mushroom-forming fungi. Evolution 65: 1862-1878.
  • Judge B, Ammirati JF, Lincoff G, Trestrail JH, Matheny PB (2010) Ingestion of a newly described North American mushroom species from Michigan resulting in chronic renal failure: Cortinarius orellanosus. Clinical Toxicology 48: 545-549.
  • Alvarado P, Manjon JL, Matheny PB, Esteve-Raventos F (2010) Tubariomyces, a new genus of Inocybaceae from the Mediterranean region. Mycologia 102: 1389-1397.
  • Matheny PB, Griffith GW (2010) Mycoparasitism between Squamanita paradoxa and Cystoderma amianthinum (Cystodermateae, Agaricales). Mycoscience 51: 456-461.
  • Hibbett DS, Matheny PB (2009) The relative ages of ectomycorrhizal mushrooms and their plant hosts estimated using Bayesian relaxed molecular clock analyses. BMC Biology 7:13.
  • Matheny PB, Aime MC, Bougher NL, Buyck B, Desjardin DE, Horak E, Kropp BR, Lodge DJ, Trappe JM, Hibbett DS (2009) Out of the palaeotropics? Historical biogeography and diversification of the cosmopolitan mushroom family Inocybaceae. Journal of Biogeography 36: 577-592.

Contact Information

  • Ecology and Evolutionary Biology334 Hesler Biology Building And GreenhouseUniversity of TennesseeKnoxville, TN 37996-1610
  • Phone: (865) 974-8896
  • E-mail:
  • Lab Website

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