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Genea mexicana, sp. nov., and Geopora tolucana, sp. nov., new hypogeous Pyronemataceae from Mexico, and the taxonomy of Geopora reevaluated

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Abstract

Two new species of hypogeous Pezizales in the Pyronemataceae are described from montane cloud forests in Mexico. Genea mexicana can be recognised by ITS sequence analysis and its distinct spore and seta dimensions; Geopora tolucana by ITS sequence analysis and its light brown hymenium, broadly ellipsoid ascospores and host preference. It belongs to the group of Geopora cooperi Harkn., which appears to be a rather heterogeneous assemblage, comprising a number of cryptic species. Our results indicate that the genus Geopora is non-monophyletic, occurring in two distinct phylogenetic clusters comprising species with either epigeous apothecial or hypogeous ptychothecial ascomata. Moreover, molecular divergence of Geopora is much higher than that of the neighbouring genera. Accordingly, we propose to reassign the cupulate apothecial Geopora species to the genus Sepultaria.

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Acknowledgements

All authors would like to thank Prof. Jim Trappe for critically reading the manuscript and an anonymous reviewer for helpful comments. G. Guevara would like to thank the DGEST (Dirección General de Educación Superior Tecnológica) and SES-PROMEP for the economic support to perform this research. B. Stielow gratefully acknowledges the help of David Fellenberg, University of Bonn, for translating the holotype descriptions into Latin, as well as the technical assistance of Nicole Mrotzek and Jennifer Gregor, DSMZ, in PCR set-up and DNA sequencing.

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Authors and Affiliations

  1. ITCV-Instituto Tecnológico de Cd. Victoria, Av. Portes Gil 1301 Pte. C.P, 87010, Cd. Victoria Tam, México

    Gonzalo Guevara-Guerrero

  2. DSMZ – Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH, Inhoffenstraße 7b, 38124, Braunschweig, Germany

    Benjamin Stielow & Markus Göker

  3. Department of Botany, Institute of Ecology and Earth Sciences, University of Tartu, 40 Lai Street, 51005, Tartu, Estonia

    Heidi Tamm

  4. Department Forest Ecosystem and Society, Oregon State University, Richardson Hall, Corvallis, Oregon, 97331, USA

    Efrén Cázares-Gonzalez

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  1. Gonzalo Guevara-Guerrero
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  2. Benjamin Stielow
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  3. Heidi Tamm
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  4. Efrén Cázares-Gonzalez
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Correspondence to Markus Göker.

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Guevara-Guerrero, G., Stielow, B., Tamm, H. et al. Genea mexicana, sp. nov., and Geopora tolucana, sp. nov., new hypogeous Pyronemataceae from Mexico, and the taxonomy of Geopora reevaluated. Mycol Progress 11, 711–724 (2012). https://doi.org/10.1007/s11557-011-0781-y

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  • DOI: https://doi.org/10.1007/s11557-011-0781-y

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