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      A new species of Viola (Violaceae) from Guangdong Province, China

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          Abstract

          Viola huizhouensis ( Violaceae ), a new species from Xiangtoushan National Nature Reserve of Guangdong Province in China, is described and illustrated. The new species is most similar to V. guangzhouensis , but it can be easily distinguished by its much stouter rhizome, lack of aerial stem, dense pubescence of the basal pedicel and the whole plant. Our phylogenetic analysis, based on ITS sequences, confirms that the new species belongs to V. sect. Diffusae .

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          Most cited references 13

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          MEGA6: Molecular Evolutionary Genetics Analysis version 6.0.

          We announce the release of an advanced version of the Molecular Evolutionary Genetics Analysis (MEGA) software, which currently contains facilities for building sequence alignments, inferring phylogenetic histories, and conducting molecular evolutionary analysis. In version 6.0, MEGA now enables the inference of timetrees, as it implements the RelTime method for estimating divergence times for all branching points in a phylogeny. A new Timetree Wizard in MEGA6 facilitates this timetree inference by providing a graphical user interface (GUI) to specify the phylogeny and calibration constraints step-by-step. This version also contains enhanced algorithms to search for the optimal trees under evolutionary criteria and implements a more advanced memory management that can double the size of sequence data sets to which MEGA can be applied. Both GUI and command-line versions of MEGA6 can be downloaded from www.megasoftware.net free of charge.
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            IQ-TREE 2: New Models and Efficient Methods for Phylogenetic Inference in the Genomic Era

            Abstract IQ-TREE (http://www.iqtree.org, last accessed February 6, 2020) is a user-friendly and widely used software package for phylogenetic inference using maximum likelihood. Since the release of version 1 in 2014, we have continuously expanded IQ-TREE to integrate a plethora of new models of sequence evolution and efficient computational approaches of phylogenetic inference to deal with genomic data. Here, we describe notable features of IQ-TREE version 2 and highlight the key advantages over other software.
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              AMPLIFICATION AND DIRECT SEQUENCING OF FUNGAL RIBOSOMAL RNA GENES FOR PHYLOGENETICS

               T.J White,  T. Bruns,  S. Lee (1990)
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                Author and article information

                Contributors
                Role: InvestigationRole: MethodologyRole: Writing - original draft
                Role: Data curationRole: Visualization
                Role: Resources
                Role: Project administration
                Role: Funding acquisition
                Journal
                PhytoKeys
                PhytoKeys
                3
                urn:lsid:arphahub.com:pub:F7FCE910-8E78-573F-9C77-7788555F8AAD
                PhytoKeys
                Pensoft Publishers
                1314-2011
                1314-2003
                2021
                16 April 2021
                : 176
                : 67-76
                Affiliations
                [1 ] State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China Sun Yat-sen University Guangzhou China
                [2 ] Management Bureau of Guangdong Xiangtoushan National Nature Reserve, Huizhou 516003, China Guangdong Xiangtoushan National Nature Reserve Huizhou China
                Author notes
                Corresponding author: Qiang Fan ( fanqiang@ 123456mail.sysu.edu.cn )

                Academic editor: A. Sennikov

                Article
                65443
                10.3897/phytokeys.176.65443
                8065024
                33958940
                Yan-Shuang Huang, Ning Kang, Xiang-Jing Zhong, Wen-Bo Liao, Qiang Fan

                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.

                Categories
                Research Article
                Violaceae
                Biodiversity & Conservation
                Taxonomy
                Cenozoic
                Neogene
                Asia
                China Seas
                Far East

                Plant science & Botany

                viola huizhouensis, morphology, new species, phylogeny, section diffusae

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