Abstract
The class Dacrymycetes has two orders (Dacrymycetales and Unilacrymales), four families, and 13 genera, few of them with available molecular data and then usually of dubious delimitation. Dacrymyces Nees is a polyphyletic genus in Dacrymycetes and was introduced to accommodate one species, D. stillatus Nees, being characterized by a homogeneous composition of the intra-structure and an amphigenous or superior hymenium. In this study, neotropical specimens were added in the phylogeny of the Dacrymycetes, and as a result, Dacrymyces s.s. is emended to include species with resupinate basidiomata, unilateral hymenium, heterogeneous context, and absence of clamp connections. In this new delimitation, the new species Dacrymyces flavobrunneus sp. nov. is described using morphological and molecular data, two new combinations (D. maxidorii comb. nov. and D. spathularia comb. nov.) are proposed based on DNA analyses, and previous combinations and new species (Dacrymyces burdsallii, D. ceraceus, D. cereus, D. confluensunilateral, D. corticioides, D. grandii, D. grandinioides, D. lagerheimii, D. pulchrus, D. sobrius, and D. venustus) are formally included in the genus circumscription.
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Data availability
All material is deposited in Herbarium URM. The sequences are deposited in GenBank. Data will be available online after the acceptance of the manuscript in http://www.splink.org.br/ and https://www.ncbi.nlm.nih.gov/genbank/.
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Acknowledgements
The authors would like to thank Angelina Meiras-Ottoni, Cléverton Mendonça, and Vitor Xavier de Lima for donations of collections, the Herbário Pe. Camille Torrend (URM) for the loan of the exsiccates. We also would like to thank Nordesta Reforestation & Education for support for field work at Biological Reserve of Pedra Talhada.
Funding
This research was funded by Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) [PQ 1D (307601/2015-3, 302941/2019-3), ICMBio 421241/2017-9] and FACEPE (BFP-0207-2.03/20, APQ 0003-2.03/18).
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All authors contributed to the study conception and design. Material preparation, data collection, and analysis were performed by Renato Lúcio Mendes Alvarenga. The manuscript was written by all authors. All authors read and approved the final manuscript. Tatiana B. Gibertoni provided funds and supervised this research.
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Mendes-Alvarenga, R.L., Gibertoni, T.B. Dacrymyces flavobrunneus sp. nov. and two new combinations in Dacrymyces Nees based on morphological and phylogenetic data. Mycol Progress 21, 96 (2022). https://doi.org/10.1007/s11557-022-01847-4
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DOI: https://doi.org/10.1007/s11557-022-01847-4