Mycological Progress

, Volume 8, Issue 1, pp 59–73 | Cite as

The phylogeny and taxonomy of genera Cystoderma and Cystodermella (Agaricales) based on nuclear ITS and LSU sequences

  • Irja SaarEmail author
  • Kadri Põldmaa
  • Urmas Kõljalg
Original Article


Species delimitation in Cystoderma and Cystodermella was evaluated based on ITS and LSU rDNA sequences as well as morphological data. Two species of Cystoderma are synonymised with C. carcharias and three species with C. jasonis, distinguishing the synonymised taxa as varieties of these accepted species. Analyses of partial LSU rDNA sequences revealed Cystoderma and Cystodermella as distinct monophyletic genera, with Ripartitella representing a well-supported sister group of the latter. Phaeolepiota aurea represents either an unsupported sister group or member of Cystoderma in the phylogenies based on LSU and ITS sequences rDNA data, respectively. The tribe Cystodermateae sensu Singer did not appear monophyletic according to analyses of LSU sequences. On the basis of these data, the phylogenetic relationships among most of the analyzed genera could not be resolved unequivocally.


Cystoderma Fayod ITS and LSU rDNA Cystoderma and Cystodermella Phaeolepiota aurea Species delimitation 



The authors are indebted to the directors and curators of the herbaria BR, C, H, K, MICH, NY, O, PDD, REG, S, TAA, TU and WU for the loan of specimens. Sincere thanks are due to Thomas Læssøe and Rasmus Kjøller for their comprehensive help during a stay in Copenhagen. We thank our colleagues, Kuulo Kalamees, Erast Parmasto and Robert Szava-Kovats, for their helpful comments and suggestions. This study was supported by the Estonian Science Foundation grant no. 6606 and 6939, and the first author’s work in Copenhagen by a grant from the European Commission’s (FP 6) Integrated Infrastructure Initiative program SYNTHESYS (DK-TAF 527).


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Copyright information

© German Mycological Society and Springer 2009

Authors and Affiliations

  1. 1.Institute of Ecology and Earth SciencesUniversity of TartuTartuEstonia
  2. 2.Natural History MuseumUniversity of TartuTartuEstonia

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