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Agaricus flocculosipes sp. nov., a new potentially cultivatable species from the palaeotropics

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Mycoscience

Abstract

Agaricus flocculosipes is described as new from northern Thailand and Mayotte based on morphology and ITS sequence analysis. The new species is compared with similar taxa, and a comprehensive description, line drawings, and colored photographs are provided. Agaricus flocculosipes is distinguished among the species in section Arvenses by its relatively large sporocarps (110–180 mm in diameter), erect floccose squamules on the surface of the stipe, and relatively small basidiospores (less than 6.5 μm long). Phylogenetic analyses based on ITS sequence data using maximum likelihood, parsimony, and Bayesian analyses all support A. flocculosipes as being a distinct species within section Arvenses. The new taxon is potentially cultivatable as it is presumably heterothallic, exhibits extensive genetic diversity, and occurs in section Arvenses, a lineage that contains other edible cultivatable taxa such as Agaricus arvensis and Agaricus subrufescens.

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Acknowledgments

We are grateful to Amy Honan, Chan Hong Twu, Dirk Stubbe, Edward Grand, Jennifer Kerekes, Jiankui Liu, Nilam Wulandari, Maria Alice Neves, Nopparat Wannathes, Thitiya Boonpratuang (Pop), Phongeun Sysouphanthong, Todd Osmundson, Thanh Huyen Le, and Tran Thi My Hanh for their help in sample collection. We thank the National Natural Science Foundation of China (Project ID: 31000013 to Ruilin Zhao), the European Distributed Institute of Taxonomy (WP2-2010 integrating research grant, Callac Principal Investigator), and the National Science Foundation (USA; Grant DEB-0118776 to Desjardin) for providing partial financial support to this research. BRN grant (BRN049/2553) is acknowledged for support to study the taxonomy of potentially edible mushrooms in Thailand. The Global Research Network for Fungal Biology and King Saud University are also thanked for supporting this project. Gaston Heuclin and Luis Parra are thanked for advice on the Latin.

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Authors and Affiliations

  1. Key Laboratory of Forest Disaster Warning and Control in Yunnan Province, Forestry College, Southwest Forestry University, Kunming, 650224, China

    Rui-Lin Zhao

  2. School of Science, Mae Fah Luang University, Tasud, Chiang Rai, 57100, Thailand

    Kevin D. Hyde & Samantha C. Karunarathna

  3. Botany and Microbiology Department, College of Science, King Saud University, Riyadh, 1145, Saudi Arabia

    Kevin D. Hyde

  4. Department of Biology, San Francisco State University, San Francisco, CA, 94132, USA

    Dennis E. Desjardin

  5. National Botanic Garden of Belgium, Domein van Bouchout, 1860, Meise, Belgium

    Olivier Raspé

  6. Faculty of Agricultural Technology, King Mongkut’s Institute of Technology Ladkrabang (KMITL), Ladkrabang, Bangkok, 10520, Thailand

    Kasem Soytong

  7. INRA, UR1264, MycSA, BP81 F-33883, Villenave d’Ornon, France

    Jacques Guinberteau & Philippe Callac

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  1. Rui-Lin Zhao
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  2. Kevin D. Hyde
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  8. Philippe Callac
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Correspondence to Kevin D. Hyde.

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Zhao, RL., Hyde, K.D., Desjardin, D.E. et al. Agaricus flocculosipes sp. nov., a new potentially cultivatable species from the palaeotropics. Mycoscience 53, 300–311 (2012). https://doi.org/10.1007/s10267-011-0169-5

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