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      Squamarina (lichenised fungi) species described from China belong to at least three unrelated genera

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          Abstract

          New collections of six Squamarina species from type localities in China were studied. The comparison of morphological characteristics and secondary metabolites with those of the type specimens and phylogenetic analyses suggest that S. callichroa and S. pachyphylla belong to Rhizoplaca , S. semisterilis belongs to Lobothallia and S. chondroderma should be retained in Lecanora temporarily. Only two species, S. kansuensis and S. oleosa , remain in Squamarina . The new combinations Lobothallia semisterilis (H. Magn.) Y. Y. Zhang, Rhizoplaca callichroa (Zahlbr.) Y. Y. Zhang and R. pachyphylla (H. Magn.) Y. Y. Zhang are proposed. Detailed descriptions to aid the identification of these species, distributions and phylogenetic trees, based on multiple collections, are presented. The generic concept of Squamarina is recircumscribed in this study.

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          Most cited references 14

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          MRBAYES: Bayesian inference of phylogenetic trees.

          The program MRBAYES performs Bayesian inference of phylogeny using a variant of Markov chain Monte Carlo. MRBAYES, including the source code, documentation, sample data files, and an executable, is available at http://brahms.biology.rochester.edu/software.html.
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            The 2016 classification of lichenized fungi in the Ascomycota and Basidiomycota – Approaching one thousand genera

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              Molecular phylogeny of the genus Stereocaulon (Stereocaulaceae, lichenized ascomycetes).

              In the present study phylogenetic relationships of the genus Stereocaulon (lichenized ascomycetes) were examined using DNA sequences from the ITS1-5.8 S-ITS2 rDNA gene cluster and from the protein-coding beta-tubulin gene. In addition to the fruticose species traditionally classified in Stereocaulon, representatives of the crustose species that have recently been transferred to the genus were included. Muhria, a monotypic genus that is morphologically similar to Stereocaulon, differing only in apothecia ontogeny, was also incorporated. The analyses included 101 specimens from the ingroup representing 49 taxa. Sequences from both DNA regions were analysed simultaneously using direct optimization under the parsimony optimality criterion. The results support the inclusion of the crustose species and Muhria in Stereocaulon, while the current infrageneric classification is not supported. As Muhria is securely nested within Stereocaulon the new combination Stereocaulon urceolatum comb. nov. (syn. Muhria urceolata) is made. Further, species concepts need to be re-examined, as some species do not appear as monophyletic entities in the phylogeny.
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                Author and article information

                Contributors
                Journal
                MycoKeys
                MycoKeys
                11
                urn:lsid:arphahub.com:pub:C004A564-9D6A-5F9F-B058-6A3815DFE9C3
                MycoKeys
                Pensoft Publishers
                1314-4057
                1314-4049
                2020
                24 April 2020
                : 66
                : 135-157
                Affiliations
                [1 ] CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan 650201, China
                [2 ] University of Chinese Academy of Sciences, Beijing 100049, China
                [3 ] Department of Botany and Molecular Evolution, Senckenberg Research Institute, 60325 Frankfurt am Main, Germany
                [4 ] Natural History Museum, University of Oslo, P.O. Box 1172, Blindern, N-0318 Oslo, Norway
                [5 ] Department of Life Science, Ningxia University, Yinchuan, Ningxia 750021, China
                Author notes
                Corresponding author: Li-Song Wang ( wanglisong@ 123456mail.kib.ac.cn )

                Academic editor: E. Gaya

                Article
                39057
                10.3897/mycokeys.66.39057
                7195383
                Yan-Yun Zhang, Xin-Yu Wang, Li-Juan Li, Christian Printzen, Einar Timdal, Dong-Ling Niu, An-Cheng Yin, Shi-Qiong Wang, Li-Song Wang

                This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

                Funding
                Kunming Institute of Botany, Chinese Academy of Science
                Categories
                Research Article
                Lichenized Fungi
                Phylogeny
                Taxonomy
                Asia

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