Morphometric studies suggest taxonomic changes in a species complex in Chromolaena (Asteraceae, Eupatorieae, Praxelinae)
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/266319 |
Resumo: | The Chromolaena congesta complex (Asteraceae, Eupatorieae) presents a difficult challenge for biodiversity researchers due to the intertwined connections of its species and the difficulty of establishing morphological boundaries. In this study, we aimed to use morphometric analyses to evaluate the delimitation of the taxa belonging to the C. congesta complex, identify informative morphological traits and to understand the identity of several “atypical” specimens morphologically related to the complex. To achieve this, we used cluster and principal component analysis to evaluate 50 morphological traits from a total of 210 specimens throughout the geographic distribution of the species complex. We found support for the recognition of at least six species - Chromolaena ascendens, C. gentianoides, C. hirsuta, C. latisquamulosa, C. rhinanthacea and C. squarrulosa - according to a phenetic species concept and to corroborate the restoration of three species from synonymy. Furthermore, our results provide a morphological recircumscription of C. congesta and C. elliptica and indicate two taxonomic novelties, including a new combination and a new species. Despite the answers provided by morphology, many taxonomic issues remain to be solved, and further studies with other types of evidence should be carried to contribute towards a more stable classification. |
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Christ, Anderson LuizSaraiva, Daniel DutraNakajima, Jimi NaokiRitter, Mara Rejane2023-10-26T03:40:04Z20230102-3306http://hdl.handle.net/10183/266319001169135The Chromolaena congesta complex (Asteraceae, Eupatorieae) presents a difficult challenge for biodiversity researchers due to the intertwined connections of its species and the difficulty of establishing morphological boundaries. In this study, we aimed to use morphometric analyses to evaluate the delimitation of the taxa belonging to the C. congesta complex, identify informative morphological traits and to understand the identity of several “atypical” specimens morphologically related to the complex. To achieve this, we used cluster and principal component analysis to evaluate 50 morphological traits from a total of 210 specimens throughout the geographic distribution of the species complex. We found support for the recognition of at least six species - Chromolaena ascendens, C. gentianoides, C. hirsuta, C. latisquamulosa, C. rhinanthacea and C. squarrulosa - according to a phenetic species concept and to corroborate the restoration of three species from synonymy. Furthermore, our results provide a morphological recircumscription of C. congesta and C. elliptica and indicate two taxonomic novelties, including a new combination and a new species. Despite the answers provided by morphology, many taxonomic issues remain to be solved, and further studies with other types of evidence should be carried to contribute towards a more stable classification.application/pdfengActa botanica brasilica. Vol. 37 (2023), e20220126, 22 p.TaxonomiaMorfologiaMorfometriaChromolaena congesta complexIntegrative taxonomyPraxelinaeMorphometric studies suggest taxonomic changes in a species complex in Chromolaena (Asteraceae, Eupatorieae, Praxelinae)info:eu-repo/semantics/articleinfo:eu-repo/semantics/otherinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001169135.pdf.txt001169135.pdf.txtExtracted Texttext/plain80185http://www.lume.ufrgs.br/bitstream/10183/266319/2/001169135.pdf.txte829b4ca63e9ef0fa8d0648fa9b16983MD52ORIGINAL001169135.pdfTexto completo (inglês)application/pdf10731955http://www.lume.ufrgs.br/bitstream/10183/266319/1/001169135.pdf67ee7b7cbe8db200d4d35fd8c08902ecMD5110183/2663192023-10-27 03:30:29.963303oai:www.lume.ufrgs.br:10183/266319Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-10-27T06:30:29Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Morphometric studies suggest taxonomic changes in a species complex in Chromolaena (Asteraceae, Eupatorieae, Praxelinae) |
title |
Morphometric studies suggest taxonomic changes in a species complex in Chromolaena (Asteraceae, Eupatorieae, Praxelinae) |
spellingShingle |
Morphometric studies suggest taxonomic changes in a species complex in Chromolaena (Asteraceae, Eupatorieae, Praxelinae) Christ, Anderson Luiz Taxonomia Morfologia Morfometria Chromolaena congesta complex Integrative taxonomy Praxelinae |
title_short |
Morphometric studies suggest taxonomic changes in a species complex in Chromolaena (Asteraceae, Eupatorieae, Praxelinae) |
title_full |
Morphometric studies suggest taxonomic changes in a species complex in Chromolaena (Asteraceae, Eupatorieae, Praxelinae) |
title_fullStr |
Morphometric studies suggest taxonomic changes in a species complex in Chromolaena (Asteraceae, Eupatorieae, Praxelinae) |
title_full_unstemmed |
Morphometric studies suggest taxonomic changes in a species complex in Chromolaena (Asteraceae, Eupatorieae, Praxelinae) |
title_sort |
Morphometric studies suggest taxonomic changes in a species complex in Chromolaena (Asteraceae, Eupatorieae, Praxelinae) |
author |
Christ, Anderson Luiz |
author_facet |
Christ, Anderson Luiz Saraiva, Daniel Dutra Nakajima, Jimi Naoki Ritter, Mara Rejane |
author_role |
author |
author2 |
Saraiva, Daniel Dutra Nakajima, Jimi Naoki Ritter, Mara Rejane |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Christ, Anderson Luiz Saraiva, Daniel Dutra Nakajima, Jimi Naoki Ritter, Mara Rejane |
dc.subject.por.fl_str_mv |
Taxonomia Morfologia Morfometria |
topic |
Taxonomia Morfologia Morfometria Chromolaena congesta complex Integrative taxonomy Praxelinae |
dc.subject.eng.fl_str_mv |
Chromolaena congesta complex Integrative taxonomy Praxelinae |
description |
The Chromolaena congesta complex (Asteraceae, Eupatorieae) presents a difficult challenge for biodiversity researchers due to the intertwined connections of its species and the difficulty of establishing morphological boundaries. In this study, we aimed to use morphometric analyses to evaluate the delimitation of the taxa belonging to the C. congesta complex, identify informative morphological traits and to understand the identity of several “atypical” specimens morphologically related to the complex. To achieve this, we used cluster and principal component analysis to evaluate 50 morphological traits from a total of 210 specimens throughout the geographic distribution of the species complex. We found support for the recognition of at least six species - Chromolaena ascendens, C. gentianoides, C. hirsuta, C. latisquamulosa, C. rhinanthacea and C. squarrulosa - according to a phenetic species concept and to corroborate the restoration of three species from synonymy. Furthermore, our results provide a morphological recircumscription of C. congesta and C. elliptica and indicate two taxonomic novelties, including a new combination and a new species. Despite the answers provided by morphology, many taxonomic issues remain to be solved, and further studies with other types of evidence should be carried to contribute towards a more stable classification. |
publishDate |
2023 |
dc.date.accessioned.fl_str_mv |
2023-10-26T03:40:04Z |
dc.date.issued.fl_str_mv |
2023 |
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info:eu-repo/semantics/article info:eu-repo/semantics/other |
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http://hdl.handle.net/10183/266319 |
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001169135 |
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eng |
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eng |
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Acta botanica brasilica. Vol. 37 (2023), e20220126, 22 p. |
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info:eu-repo/semantics/openAccess |
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openAccess |
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