Taxon最新文献

{"title":"IAPT chromosome data 42","authors":"Karol Marhold, Jaromír Kučera, Ruzanna G. Adamyan, Janna A. Akopian, Araksya H. Elbakyan, Sona V. Galstyan, Gayane M. Gatrchyan, Anahit G. Ghukasyan, Aghunik V. Harutyunyan, Alla M. Hayrapetyan, Zhanna H. Hovakimyan, Judita Kochjarová, Ján Kováč, Lora Yu. Martirosyan, Lenka Mártonfiová, Nelli N. Muradyan, Yevgenia M. Navasardyan, Anush A. Nersesyan, Astghik V. Poghosyan, Kristína Pulišová, Barbora Šingliarová, Pavel Širka, Katarína Skokanová, Zhirayr H. Vardanyan","doi":"10.1002/tax.13257","DOIUrl":"https://doi.org/10.1002/tax.13257","url":null,"abstract":"","PeriodicalId":49448,"journal":{"name":"Taxon","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142248853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Species delimitation in Xanthium sect. Acanthoxanthium (Heliantheae, Asteraceae) and the neglected species Xanthium argenteum","authors":"Eleonora Manzo, Sebastian Nillies, Diego G. Gutiérrez, José L. Panero, Christian Bräuchler, Salvatore Tomasello","doi":"10.1002/tax.13245","DOIUrl":"https://doi.org/10.1002/tax.13245","url":null,"abstract":"<jats:italic>Xanthium</jats:italic> is a genus of annual herbaceous plants that stands out within Asteraceae for being wind‐pollinated, diclinous monoecious, and bearing solitary pistillate flowers in peculiar spiny structures (burs). <jats:italic>Xanthium</jats:italic> sect. <jats:italic>Acanthoxanthium</jats:italic> is native to South America and characterized by the presence of trifurcate spines at the base of the leaves. Past taxonomic treatments of the section have been contradictory, some recognising up to six species, others reducing all to a single polymorphic species. Altogether, 42 samples of <jats:italic>X.</jats:italic> sect. <jats:italic>Acanthoxanthium</jats:italic> were analysed, the vast majority taken from herbarium specimens between 20 and 160 years old. We sampled multiple specimens of <jats:italic>X. spinosum</jats:italic> from throughout its broad range as well as those taxa with narrower distributions, covering the whole range of morphological variation in the section. When possible, we included types and original material. We used Hyb‐Seq techniques to obtain information from about 1000 single‐copy nuclear genes and complete plastomes. Phylogenomic data were submitted to coalescent‐based species delimitation approaches (SPEEDEMON). Additionally, we performed geometric morphometric analysis of leaf outlines. The results strongly support the identification of four lineages in the section favouring the acceptance of four of the hitherto described species, i.e., <jats:italic>X. ambrosioides</jats:italic>, <jats:italic>X. argenteum</jats:italic>, <jats:italic>X. catharticum</jats:italic>, and <jats:italic>X. spinosum</jats:italic>. These results were to some extent corroborated by morphometric analyses. While <jats:italic>X. ambrosioides</jats:italic> was well distinct from <jats:italic>X. spinosum</jats:italic> based on leaf morphology, such difference was not observed between <jats:italic>X. spinosum</jats:italic> and <jats:italic>X. catharticum</jats:italic>. However, <jats:italic>X. catharticum</jats:italic> differs from <jats:italic>X. spinosum</jats:italic> in its ecological requirements, being a species rather adapted to high‐mountain environments of the Neotropics. Intriguingly, <jats:italic>X. argenteum</jats:italic> – a taxon described from a single herbarium collection – was also inferred as a species.","PeriodicalId":49448,"journal":{"name":"Taxon","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142268260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Morphological and molecular analyses consistently support the existence of two species under Hypochaeris achyrophorus (Asteraceae, Cichorieae)","authors":"Francisco Javier Jiménez‐López, María Talavera, María Ángeles Ortiz","doi":"10.1002/tax.13248","DOIUrl":"https://doi.org/10.1002/tax.13248","url":null,"abstract":"The species boundaries in <jats:italic>Hypochaeris</jats:italic> sect. <jats:italic>Seriola</jats:italic> (Asteraceae, Cichorieae) are difficult to establish due to the phenotypic similarity between taxa. The main objective of the present study was to characterize the phylogenetic position of the annual <jats:italic>Hypochaeris achyrophorus</jats:italic> using plastid and nuclear DNA markers, and to determine whether some morphological differences between western and eastern Mediterranean populations are supported by genetic differences. To achieve this, phylogenetic reconstruction, species delimitation analysis and morphometrical analysis of flower characters were carried out. The case provides a fantastic setting to study the evolution of annuality/perenniality and homocarpy/heterocarpy. The results confirm the presence of two distinct taxa within <jats:italic>H. achyrophorus</jats:italic>: <jats:italic>Hypochaeris stuessyi</jats:italic> comb. nov., in the westernmost part of the distribution, containing populations with the most ancestral characters, and <jats:italic>H. achyrophorus</jats:italic>, with biogeographically and morphologically distinct characters, phylogenetically closer to <jats:italic>H. laevigata</jats:italic>, a perennial species, than to <jats:italic>H. stuessyi</jats:italic>. Our results indicate that perennial habit and homocarpy are derived characters in the study group that can appear multiple times in evolution, complicating traditional taxonomy. Moreover, when related species with convergent characters are observed, only the use of molecular tools can confirm that subtle morphological differences have distinct evolutionary histories.","PeriodicalId":49448,"journal":{"name":"Taxon","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142248854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biogeographic, climatic, morphological, cytological and molecular data reveal a new diploid species from China in the genus Xanthocyparis (Cupressaceae)","authors":"Yu‐Liang Jiang, Jia‐Liang Li, Richard Ian Milne, Khang Sinh Nguyen, Zhi‐Tong Han, Yu‐Song Huang, Wei‐Bin Xu, Yan Liu, Kang‐Shan Mao","doi":"10.1002/tax.13246","DOIUrl":"https://doi.org/10.1002/tax.13246","url":null,"abstract":"The genus <jats:italic>Xanthocyparis</jats:italic> was described in 2002 for a new conifer species <jats:italic>X. vietnamensis</jats:italic> from northern Vietnam, which became well‐known for its rarity. Recently, natural diploid populations were found in a small area of northern Guangxi, China, whereas material from Vietnam plus newly discovered populations from southern Guangxi were determined to be tetraploids. We integrated evidence from multiple data sources to perform a taxonomic evaluation of the two ploidy levels present in <jats:italic>Xanthocyparis</jats:italic>. Morphometric analyses detected statistically significant differences in cone and leaf characters, whereas microsatellite and transcriptome analyses revealed clear genetic divergence between diploid and tetraploid material. Furthermore, analysis of bioclimatic variables confirmed divergence in ecological niches. Gene trees from homologous sequences indicate that tetraploid material might have arisen via allopolyploidy from the extant diploid material and a third, possibly extinct lineage. Therefore, we recognize and describe a new diploid species from northern Guangxi China: <jats:italic>Xanthocyparis guangxiensis</jats:italic>.","PeriodicalId":49448,"journal":{"name":"Taxon","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142249066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"(3050) Proposal to reject the name Cistus pilosus (Cistaceae)","authors":"P. Pablo Ferrer‐Gallego","doi":"10.1002/tax.13254","DOIUrl":"https://doi.org/10.1002/tax.13254","url":null,"abstract":"","PeriodicalId":49448,"journal":{"name":"Taxon","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142218702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evolutionary relationship and taxonomic revision of the Asplenium exiguum complex (Aspleniaceae) based on integrated evidence","authors":"Si‐Qi Liang, Xian‐Chun Zhang","doi":"10.1002/tax.13244","DOIUrl":"https://doi.org/10.1002/tax.13244","url":null,"abstract":"&lt;jats:italic&gt;Asplenium&lt;/jats:italic&gt; is one of the most species‐rich genera of ferns. While ubiquitous polyploidy and hybridization events, as well as vast distribution ranges, contribute to its remarkable diversity, these facts also lead to extreme classification difficulties. The &lt;jats:italic&gt;A. exiguum&lt;/jats:italic&gt; complex is a natural morphological assemblage of taxa sharing part or all ancestral genomes due to polyploidy and hybridization. Consisting of 4 to 13 taxa mainly distributed in the Sino‐Himalayan region, taxonomic issues of this complex have been debatable for a long time. Here, we collected 49 samples representing the majority of the recognized taxa and reconstructed phylogenetic trees using two plastid loci (&lt;jats:italic&gt;rbcL&lt;/jats:italic&gt;, &lt;jats:italic&gt;rpl32‐trnP&lt;/jats:italic&gt;) and three nuclear loci (&lt;jats:italic&gt;pgiC&lt;/jats:italic&gt;, &lt;jats:italic&gt;SQD1&lt;/jats:italic&gt;, nrDNA). Evidence from ploidy, macro‐ and micromorphology, geographical pattern, and ecological niche was also integrated to illuminate the species boundaries and evolutionary history within the complex. According to our investigation, six taxa, including two diploid species (&lt;jats:italic&gt;A. barkamense&lt;/jats:italic&gt;, &lt;jats:italic&gt;A. lushanense&lt;/jats:italic&gt;), three tetraploid species (&lt;jats:italic&gt;A. exiguum&lt;/jats:italic&gt;, &lt;jats:italic&gt;A. glenniei&lt;/jats:italic&gt;, &lt;jats:italic&gt;A. nesii&lt;/jats:italic&gt;), and one triploid nothospecies (&lt;jats:italic&gt;A.&lt;/jats:italic&gt; ×&lt;jats:italic&gt;mickelii&lt;/jats:italic&gt;), are accepted. &lt;jats:italic&gt;Asplenium barkamense&lt;/jats:italic&gt;, which used to be treated as a synonym of &lt;jats:italic&gt;A. nesii&lt;/jats:italic&gt; in &lt;jats:italic&gt;Flora of China&lt;/jats:italic&gt;, is an independent species and the common diploid progenitor of autotetraploid &lt;jats:italic&gt;A. nesii&lt;/jats:italic&gt; and allotetraploid &lt;jats:italic&gt;A. glenniei&lt;/jats:italic&gt;. Moreover, &lt;jats:italic&gt;A. glenniei&lt;/jats:italic&gt; (= &lt;jats:italic&gt;A. yunnanense&lt;/jats:italic&gt;), widespread in the subtropical and temperate regions of East Asia and occasionally seen in the southwestern United States, Mexico, and northern Guatemala of North America, is an allotetraploid originated from &lt;jats:italic&gt;A. barkamense&lt;/jats:italic&gt; and &lt;jats:italic&gt;A. lushanense&lt;/jats:italic&gt;, whereas &lt;jats:italic&gt;A. exiguum&lt;/jats:italic&gt;, known with a narrow distribution in tropical Asia, is a putative autotetraploid offspring of &lt;jats:italic&gt;A. lushanense&lt;/jats:italic&gt;. Therefore, &lt;jats:italic&gt;A. glenniei&lt;/jats:italic&gt; is restored as an independent species from &lt;jats:italic&gt;A. exiguum&lt;/jats:italic&gt;. &lt;jats:italic&gt;Asplenium&lt;/jats:italic&gt; ×&lt;jats:italic&gt;mickelii&lt;/jats:italic&gt; is supported as a sterile hybrid of &lt;jats:italic&gt;A. lushanense&lt;/jats:italic&gt; and &lt;jats:italic&gt;A. glenniei&lt;/jats:italic&gt;. In addition, our study suggests that the majority of speciation events in the complex probably took place in the Hengduan Mountains, where complicated orogenic activities and climatic oscillations facilitate geographic isolation and polyplo","PeriodicalId":49448,"journal":{"name":"Taxon","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142218704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"(3047) Proposal to conserve the name Ctenitis against Atalopteris (Dryopteridaceae)","authors":"Ledis Regalado, Josmaily Lóriga, Andreas Beck","doi":"10.1002/tax.13251","DOIUrl":"https://doi.org/10.1002/tax.13251","url":null,"abstract":"","PeriodicalId":49448,"journal":{"name":"Taxon","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142218703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"REPORT FROM THE XX INTERNATIONAL BOTANICAL CONGRESS, MADRID, SPAIN, 21–27 JULY 2024","authors":"Morgan R. Gostel, Rocio Deanna, Gustavo H. Shimizu","doi":"10.1002/tax.13247","DOIUrl":"https://doi.org/10.1002/tax.13247","url":null,"abstract":"","PeriodicalId":49448,"journal":{"name":"Taxon","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142218705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The cardamom conundrum resolved: Recircumscription and placement of Elettaria in the only pantropically distributed ginger lineage","authors":"Axel Dalberg Poulsen, Tomáš Fér, Lakmini Darshika Kumarage Marasinghe, Mamiyil Sabu, Mark Hughes, Eugenio Valderrama, Jana Leong‐Škorničková","doi":"10.1002/tax.13242","DOIUrl":"https://doi.org/10.1002/tax.13242","url":null,"abstract":"The overarching aim of the present study is to sort out the taxonomy of a group of gingers that include the useful and worldwide economically important green cardamom, <jats:italic>Elettaria cardamomum</jats:italic>, and its wild relatives, to highlight potentially overlooked genetic resources. These species occur naturally in India and Sri Lanka, and our study facilitates more appropriate management priorities for the remaining forest fragments in which they occur. We used NGS Hyb‐Seq methods and sampled four species of the Alpinia I (Fax) clade, six representatives of <jats:italic>Aframomum</jats:italic> and <jats:italic>Renealmia</jats:italic> as well as two other basally flowering Sri Lankan species. This is the only pantropically distributed lineage within the entire family, and our result shows that the Alpinia I clade in fact is simply the genus <jats:italic>Elettaria</jats:italic> (confined to India and Sri Lanka), which is sister to the genera <jats:italic>Aframomum</jats:italic> (Africa) and <jats:italic>Renealmia</jats:italic> (Africa and Neotropics). The taxonomic implications are: (1) a recircumscription of <jats:italic>Elettaria</jats:italic> comprising seven species (<jats:italic>E. cardamomum</jats:italic>, <jats:italic>E. ensal</jats:italic>, <jats:italic>E. floribunda</jats:italic>, <jats:italic>E. involucrata</jats:italic>, <jats:italic>E. rufescens</jats:italic> as well as two new species, <jats:italic>E. facifera</jats:italic> and <jats:italic>E. tulipifera</jats:italic> described here); (2) the Sri Lankan endemic genus <jats:italic>Cyphostigma</jats:italic> should be retained; (3) the new monotypic genus, <jats:italic>Srilankanthus</jats:italic> endemic in Sri Lanka, is described with <jats:italic>S. nemoralis</jats:italic>, formerly <jats:italic>Amomum nemorale</jats:italic>, as type. A key is provided to the seven species of <jats:italic>Elettaria</jats:italic> and lectotypifications are made for five species (<jats:italic>Cyphostigma pulchellum</jats:italic>, <jats:italic>Elettaria floribunda</jats:italic>, <jats:italic>E. involucrata</jats:italic>, <jats:italic>E. nemoralis</jats:italic>, <jats:italic>E. rufescens</jats:italic>).","PeriodicalId":49448,"journal":{"name":"Taxon","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142218708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"(3051) Proposal to conserve the name Thymus marschallianus (Lamiaceae) with a conserved type","authors":"Viktor O. Nachychko, Andriy V. Novikov, Oleksandr T. Kuzyarin","doi":"10.1002/tax.13255","DOIUrl":"https://doi.org/10.1002/tax.13255","url":null,"abstract":"","PeriodicalId":49448,"journal":{"name":"Taxon","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142218706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}