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New species from Argentinean Yungas, Cercopemyces messii and Clitocybe cedrelae (Agaricomycetes, Agaricales)

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Abstract

The Argentine Northwest has a system of tropical and subtropical montane cloud forests on the Andes Mountains, where there is a significant diversity of Agaricales fungi yet to be discovered. Two new species from the Cedrela forest, inside the Baritú National Park, Argentina, are described in this work as Cercopemyces messii and Clitocybe cedrelae. Phylogenetic analysis was performed using the nuclear internal transcribed spacer (nrITS) region and the large subunit (nrLSU) of the nuclear ribosomal RNA. Complete taxonomic descriptions, field photographs, drawings, photographs captured with the scanning electron microscope (SEM) of the basidiospores, and comparisons of the similar and closely related species are provided. Both taxa have ornamented basidiospores that are hyaline, inamyloid, and clamp connections in all tissues. They were also found within the same area, and both presented a good number of specimens. These striking species should be considered in danger since their natural habitats are also at risk.

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Data Availability

DNA sequence data generated or used in the current study are deposited at GenBank as set out in Tables 1 and 2 of the present paper.

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Acknowledgements

Additionally, we extend our heartfelt appreciation to the park rangers of Baritú National Park and El Nogalar De Los Toldos National Reserve for their invaluable collaboration during the sampling conducted within the reserve. Their support, provision, and the use of facilities in Lipeo greatly contributed to the discovery of a significant number of collections. Our appreciation is also extended to M. Collazo for his computing assistance.

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Authors and Affiliations

  1. CONICET, Instituto de Micología y Botánica (InMiBo), Pabellón 2, Laboratorio 7, Intendente Güiraldes 2160, 1428, Ciudad Autónoma de Buenos Aires, Argentina

    Agustín P. Martínez & Bernardo E. Lechner

  2. Facultad de Ciencias Exactas y Naturales, Departamento de Biodiversidad y Biología Experimental, Intendente Güiraldes, Universidad de Buenos Aires, Pabellón 2, Laboratorio 7, 2160, 1428, Ciudad Autónoma de Buenos Aires, Argentina

    Juan M. Suárez, Joaquín Aliaga & Bernardo E. Lechner

  3. Department of Biological Sciences, State University of NY – College at Cortland, 340 Bowers Hall, Graham Ave, PO Box 2000, Cortland, New York, 13045, USA

    Timothy J. Baroni

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  1. Agustín P. Martínez
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Correspondence to Bernardo E. Lechner.

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Martínez, A.P., Suárez, J.M., Aliaga, J. et al. New species from Argentinean Yungas, Cercopemyces messii and Clitocybe cedrelae (Agaricomycetes, Agaricales). Mycol Progress 23, 33 (2024). https://doi.org/10.1007/s11557-024-01971-3

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