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<p>Two new earth tongues species, <i>Geoglossum calciphilum</i>, originating from an old chalk quarry, and <i>G. verkinii</i>, from a bank of an old carriage road, are described from Slovakia, Central Europe. Ascocarps of both species are relatively small, black, and characterized by a scaly stipe. These new species were identified based on unique morphological traits and molecular phylogenetic analyses of DNA sequences (ITS and LSU regions). <i>Geoglossum calciphilum</i> is characterized by 7-septate ascospores; however, a small fraction of ascospores (at least one) in each ascus is regularly 3-septate. Phylogenetically, <i>G. calciphilum</i> is closely related to representatives of <i>G. vleugelianum</i>, <i>G. dunense</i>, and <i>G. inflatum</i> of European Mediterranean origin. <i>Geoglossum verkinii</i> shows a phylogenetic relationship with <i>G. chamaecyparinum</i> from Spain. However, it belongs to the group of <i>Geoglossum</i> species with 15-septate ascospores and morphologically resembles <i>G. pygmaeum</i>, a species described from the USA. The morphology of both newly described species is compared with those of similar taxa and differences are highlighted and discussed.</p>

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Two new species of Geoglossum (Geoglossaceae, Ascomycota) from Central Europe

  • 期刊论文

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  • 发表日期：

    2025年7月4日

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  • Viktor Kučera,
  • Anna G. Fedosova

摘要

Two new earth tongues species, Geoglossum calciphilum, originating from an old chalk quarry, and G. verkinii, from a bank of an old carriage road, are described from Slovakia, Central Europe. Ascocarps of both species are relatively small, black, and characterized by a scaly stipe. These new species were identified based on unique morphological traits and molecular phylogenetic analyses of DNA sequences (ITS and LSU regions). Geoglossum calciphilum is characterized by 7-septate ascospores; however, a small fraction of ascospores (at least one) in each ascus is regularly 3-septate. Phylogenetically, G. calciphilum is closely related to representatives of G. vleugelianum, G. dunense, and G. inflatum of European Mediterranean origin. Geoglossum verkinii shows a phylogenetic relationship with G. chamaecyparinum from Spain. However, it belongs to the group of Geoglossum species with 15-septate ascospores and morphologically resembles G. pygmaeum, a species described from the USA. The morphology of both newly described species is compared with those of similar taxa and differences are highlighted and discussed.