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<p><i>Inocybe</i> is a globally distributed genus of ectomycorrhizal fungi that occurs in temperate and tropical regions. However, species diversity of the genus in Africa remains underexplored. In this study, four new nodulose-spored <i>Inocybe</i> species, <i>I</i>. <i>arenosa</i>, <i>I</i>. <i>basialba</i>, <i>I</i>. <i>liliputiana</i>, and <i>I</i>. <i>luteofusca</i>, from tropical regions of Benin in West Africa, are described and illustrated based on comprehensive morphological and molecular analyses. In addition, <i>I</i>. <i>glaucodisca,</i> originally described from Zambia (Southeast Africa), is reported for the first time from West Africa (Benin). All five <i>Inocybe</i> species occur in association with <i>Berlinia grandiflora</i> (<i>Fabaceae</i>). Multilocus molecular analyses of the nuclear ribosomal internal transcribed spacer region (nrITS), a partial of the nuclear ribosomal large subunit (nrLSU), and a segment of the RNA polymerase II second-largest subunit (<i>RPB2</i>) gene, confirm the distinctiveness of these four novel species and indicate their phylogenetic placement within <i>Inocybe</i>.</p>

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Four new species and a new record of nodulose-spored Inocybe (Inocybaceae, Agaricales) from Benin, West Africa

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  • 发表日期：

    2026年3月2日

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  • Oğuzhan Kaygusuz,
  • Ditte Bandini,
  • Adrian Rühl,
  • Sepas Sarawi,
  • Nourou S. Yorou,
  • P. Brandon Matheny,
  • Meike Piepenbring

摘要

Inocybe is a globally distributed genus of ectomycorrhizal fungi that occurs in temperate and tropical regions. However, species diversity of the genus in Africa remains underexplored. In this study, four new nodulose-spored Inocybe species, I. arenosa, I. basialba, I. liliputiana, and I. luteofusca, from tropical regions of Benin in West Africa, are described and illustrated based on comprehensive morphological and molecular analyses. In addition, I. glaucodisca, originally described from Zambia (Southeast Africa), is reported for the first time from West Africa (Benin). All five Inocybe species occur in association with Berlinia grandiflora (Fabaceae). Multilocus molecular analyses of the nuclear ribosomal internal transcribed spacer region (nrITS), a partial of the nuclear ribosomal large subunit (nrLSU), and a segment of the RNA polymerase II second-largest subunit (RPB2) gene, confirm the distinctiveness of these four novel species and indicate their phylogenetic placement within Inocybe.