Abstract
A new monotypic genus in the Boletaceae, Borofutus, typified by B. dhakanus, is described using morphological and molecular evidence. This is a putatively ectomycorrhizal fungus associated with Shorea robusta. Borofutus is characterized by the combination of the following characters: basidiomata small to medium-sized; pileus grayish brown to cocoa brown; hymenophore subdecurrent, cream then golden brown, with broad, nearly hexagonal pores; basidiospores purple to purplish red in H2O, ornamented with irregular to regular shallow pits; cystidia lageniform, thick-walled. Borofutus is sister to Spongiforma in molecular phylogenetic analyses using DNA nucleotide sequences of single or multiple loci. A description, line drawings, phylogenetic placement and comparison with allied taxa are presented herein.
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Acknowledgements
The first author is grateful to Md. Abbas Ali and Md. Abdus Samad, Thakurgaon, Bangladesh for the field investigation and collection of the specimens. Special thanks to Prof. Dr. Dennis E. Desjardin, Department of Biology, San Francisco State University, California, USA and Prof. Dr. Donald H. Pfister, Farlow Herbarium of Harvard University, USA for providing the type materials of Spongiforma thailandica and Austroboletus tristis, respectively. The authors are thanked to Jacqueline Van De Veire, Chengdu Institute of Biology, Chengdu, Sichuan, China for polishing the manuscript. Acknowledgements extend to Dr. Su-See Lee, Forest Research Institute Malaysia, Selangor, Malaysia for providing literature. The authors thank to Dr. Maria Alice Neves, Universidade Federal de Santa Catarina, Florianópolis, Brazil for providing her newly generated sequences of Phylloporus pumilus and Dr. N. K. Zeng, Department of Pharmacy, Hainan Medical University, China for providing SEM images of Austroboletus tristis. The authors are very grateful to reviewers Dr. Roy E. Halling, Institute of Systematic Botany, the New York Botanical Garden, USA and Dr. Else C. Vellinga, Department of Plant and Microbial Biology, University of California, USA for their constructive comments and suggestions. This study was supported by the Funds for International Cooperation and Exchange of the National Natural Science Foundation of China (No. 31210103919), the National Basic Research Program of China (No. 2009CB522300), the Hundred Talents Program of the Chinese Academy of Sciences, and the Ministry of Science and Technology of China (2008FY110300).
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Hosen, M.I., Feng, B., Wu, G. et al. Borofutus, a new genus of Boletaceae from tropical Asia: phylogeny, morphology and taxonomy. Fungal Diversity 58, 215–226 (2013). https://doi.org/10.1007/s13225-012-0211-8
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DOI: https://doi.org/10.1007/s13225-012-0211-8