Fungal Diversity

, Volume 77, Issue 1, pp 335–347 | Cite as

Global diversity and taxonomy of the Inonotus linteus complex (Hymenochaetales, Basidiomycota): Sanghuangporus gen. nov., Tropicoporus excentrodendri and T. guanacastensis gen. et spp. nov., and 17 new combinations

  • Li-Wei Zhou
  • Josef Vlasák
  • Cony Decock
  • Addisu Assefa
  • Jan Stenlid
  • Dawit Abate
  • Sheng-Hua Wu
  • Yu-Cheng Dai


Although Inonotus linteus complex is placed in the genus Inonotus, its perennial basidiocarps with a dimitic hyphal system, at least in the trama, distinguish the complex from other species in the genus, which have an annual habit and a monomitic hyphal system. The species number of Inonotus linteus complex has been increased in China and tropical America in recent publications. However, whether species in this complex belong to Inonotus has not specifically been addressed. To explore the phylogenetic placement of species of Inonotus linteus complex, we performed a comprehensive study using morphological and phylogenetic data based on global samples. nLSU (53 with 13 new) and ITS (70 with 18 new) datasets were used to produce the phylogenetic results. Taking into consideration the phylogenies inferred from the nLSU and ITS datasets, Inonotus is a polyphyletic genus comprising at least three clades. Clade A, the core Inonotus clade, contains the generic type, Inonotus hispidus, while Clades B and C comprise species from the Inonotus linteus complex. Morphological and phylogenetic evidence indicates that Clades B and C are new genera, and Sanghuangporus and Tropicoporus are introduced in this study. Ten species are transferred to Sanghuangporus and seven to Tropicoporus. Tropicoporus excentrodendri and T. guanacastensis spp. nov. are described, and their distinctive characters are discussed. Keys to the two new genera and the Inonotus sensu stricto, and to species of each new genus are provided.


Polypore Hymenochaetaceae Morphology nLSU ITS 



Special thanks are due to Karl-Henrik Larsson (O, Norway) and Tsutomu Hattori (FFPRI, Japan) for loan of specimens and culture. This research was financed by the National Natural Science Foundation of China (Project No. 31200015).


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Copyright information

© School of Science 2015

Authors and Affiliations

  • Li-Wei Zhou
    • 1
  • Josef Vlasák
    • 3
  • Cony Decock
    • 4
  • Addisu Assefa
    • 5
  • Jan Stenlid
    • 6
  • Dawit Abate
    • 7
  • Sheng-Hua Wu
    • 2
  • Yu-Cheng Dai
    • 1
  1. 1.State Key Laboratory of Forest and Soil EcologyInstitute of Applied Ecology, Chinese Academy of SciencesShenyangChina
  2. 2.Department of BiologyNational Museum of Natural ScienceTaiwanRepublic of China
  3. 3.Biology Centre of the Academy of Sciences of the Czech RepublicČeské BudějoviceCzech Republic
  4. 4.Mycothèque de l’Université catholique de Louvain (MUCL, BCCMTM), Earth and Life Institute – Microbiology (ELIM)Université catholique de LouvainLouvain-la-NeuveBelgium
  5. 5.Department of BiologyMadawalabu UniversityBale RobeEthiopia
  6. 6.Department of Forest Mycology and Plant PathologySwedish University of Agricultural SciencesUppsalaSweden
  7. 7.Department of Microbial, Cellular and Molecular BiologyAddis Ababa UniversityAddis AbabaEthiopia

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