Morphometric analysis of Schizachyrium Nees (Poaceae-Andropogoneae) reveals two new species from South America

Autores
Peichoto, Myriam Carolina; Welker, Cassiano Aimberê Dorneles; Solis Neffa, Viviana Griselda
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Schizachyrium (Poaceae: Andropogoneae) includes ca. 60 species distributed in tropical and subtropical regions of the world. Although the genus has been revised recently for South America, a group of specimens with intermediate traits from Cerrado vegetation of Brazil and Paraguay was found. The aim of this paper is to assess the morphological variation of these specimens to clarify their taxonomic identity. Thirty-seven traits (15 qualitative and 22 quantitative characters) were analyzed using multivariate methods (cluster and principal coordinate analysis). The analysis included specimens from Central Brazil and Paraguay, as well as the type material of several morphologically similar species. The results obtained showed that the samples investigated form two clearly distinct groups from the species hitherto recognized. Based on this morphometric analysis, two new species of Schizachyrium from South America are proposed, one of them occurring in Brazil and Paraguay (Schizachyrium angustispiculatum), and the other restricted to Brazil (S. vallsii). Moreover, Andropogon luxurians proved as a distinct taxon from Schizachyrium sanguineum, being proposed the new combination of the name for the genus Schizachyrium (S. luxurians). Description and illustrations of the two new species and the new combination are presented, as well as a key to separate them from other morphologically related species.
Fil: Peichoto, Myriam Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Botánica del Nordeste (i); Argentina
Fil: Welker, Cassiano Aimberê Dorneles. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Solis Neffa, Viviana Griselda. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Botánica del Nordeste (i); Argentina
Materia
Brazil
Morphometric Analysis
Grasses
Paraguay
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/7804
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Morphometric analysis of Schizachyrium Nees (Poaceae-Andropogoneae) reveals two new species from South AmericaPeichoto, Myriam CarolinaWelker, Cassiano Aimberê DornelesSolis Neffa, Viviana GriseldaBrazilMorphometric AnalysisGrassesParaguayhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Schizachyrium (Poaceae: Andropogoneae) includes ca. 60 species distributed in tropical and subtropical regions of the world. Although the genus has been revised recently for South America, a group of specimens with intermediate traits from Cerrado vegetation of Brazil and Paraguay was found. The aim of this paper is to assess the morphological variation of these specimens to clarify their taxonomic identity. Thirty-seven traits (15 qualitative and 22 quantitative characters) were analyzed using multivariate methods (cluster and principal coordinate analysis). The analysis included specimens from Central Brazil and Paraguay, as well as the type material of several morphologically similar species. The results obtained showed that the samples investigated form two clearly distinct groups from the species hitherto recognized. Based on this morphometric analysis, two new species of Schizachyrium from South America are proposed, one of them occurring in Brazil and Paraguay (Schizachyrium angustispiculatum), and the other restricted to Brazil (S. vallsii). Moreover, Andropogon luxurians proved as a distinct taxon from Schizachyrium sanguineum, being proposed the new combination of the name for the genus Schizachyrium (S. luxurians). Description and illustrations of the two new species and the new combination are presented, as well as a key to separate them from other morphologically related species.Fil: Peichoto, Myriam Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Botánica del Nordeste (i); ArgentinaFil: Welker, Cassiano Aimberê Dorneles. Universidade Federal do Rio Grande do Sul; BrasilFil: Solis Neffa, Viviana Griselda. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Botánica del Nordeste (i); ArgentinaAmerican Society Of Plant Taxonomists2015-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/7804Peichoto, Myriam Carolina; Welker, Cassiano Aimberê Dorneles; Solis Neffa, Viviana Griselda; Morphometric analysis of Schizachyrium Nees (Poaceae-Andropogoneae) reveals two new species from South America; American Society Of Plant Taxonomists; Systematic Botany; 40; 2; 10-2015; 461-4730363-64451548-2324enginfo:eu-repo/semantics/altIdentifier/url/http://www.bioone.org/doi/abs/10.1600/036364415X688727?journalCode=sbotinfo:eu-repo/semantics/altIdentifier/doi/10.1600/036364415X688727info:eu-repo/semantics/altIdentifier/url/http://www.ingentaconnect.com/content/aspt/sb/pre-prints/content-1400040info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:29:48Zoai:ri.conicet.gov.ar:11336/7804instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:29:49.0CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Morphometric analysis of Schizachyrium Nees (Poaceae-Andropogoneae) reveals two new species from South America
title Morphometric analysis of Schizachyrium Nees (Poaceae-Andropogoneae) reveals two new species from South America
spellingShingle Morphometric analysis of Schizachyrium Nees (Poaceae-Andropogoneae) reveals two new species from South America
Peichoto, Myriam Carolina
Brazil
Morphometric Analysis
Grasses
Paraguay
title_short Morphometric analysis of Schizachyrium Nees (Poaceae-Andropogoneae) reveals two new species from South America
title_full Morphometric analysis of Schizachyrium Nees (Poaceae-Andropogoneae) reveals two new species from South America
title_fullStr Morphometric analysis of Schizachyrium Nees (Poaceae-Andropogoneae) reveals two new species from South America
title_full_unstemmed Morphometric analysis of Schizachyrium Nees (Poaceae-Andropogoneae) reveals two new species from South America
title_sort Morphometric analysis of Schizachyrium Nees (Poaceae-Andropogoneae) reveals two new species from South America
dc.creator.none.fl_str_mv Peichoto, Myriam Carolina
Welker, Cassiano Aimberê Dorneles
Solis Neffa, Viviana Griselda
author Peichoto, Myriam Carolina
author_facet Peichoto, Myriam Carolina
Welker, Cassiano Aimberê Dorneles
Solis Neffa, Viviana Griselda
author_role author
author2 Welker, Cassiano Aimberê Dorneles
Solis Neffa, Viviana Griselda
author2_role author
author
dc.subject.none.fl_str_mv Brazil
Morphometric Analysis
Grasses
Paraguay
topic Brazil
Morphometric Analysis
Grasses
Paraguay
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Schizachyrium (Poaceae: Andropogoneae) includes ca. 60 species distributed in tropical and subtropical regions of the world. Although the genus has been revised recently for South America, a group of specimens with intermediate traits from Cerrado vegetation of Brazil and Paraguay was found. The aim of this paper is to assess the morphological variation of these specimens to clarify their taxonomic identity. Thirty-seven traits (15 qualitative and 22 quantitative characters) were analyzed using multivariate methods (cluster and principal coordinate analysis). The analysis included specimens from Central Brazil and Paraguay, as well as the type material of several morphologically similar species. The results obtained showed that the samples investigated form two clearly distinct groups from the species hitherto recognized. Based on this morphometric analysis, two new species of Schizachyrium from South America are proposed, one of them occurring in Brazil and Paraguay (Schizachyrium angustispiculatum), and the other restricted to Brazil (S. vallsii). Moreover, Andropogon luxurians proved as a distinct taxon from Schizachyrium sanguineum, being proposed the new combination of the name for the genus Schizachyrium (S. luxurians). Description and illustrations of the two new species and the new combination are presented, as well as a key to separate them from other morphologically related species.
Fil: Peichoto, Myriam Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Botánica del Nordeste (i); Argentina
Fil: Welker, Cassiano Aimberê Dorneles. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Solis Neffa, Viviana Griselda. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Botánica del Nordeste (i); Argentina
description Schizachyrium (Poaceae: Andropogoneae) includes ca. 60 species distributed in tropical and subtropical regions of the world. Although the genus has been revised recently for South America, a group of specimens with intermediate traits from Cerrado vegetation of Brazil and Paraguay was found. The aim of this paper is to assess the morphological variation of these specimens to clarify their taxonomic identity. Thirty-seven traits (15 qualitative and 22 quantitative characters) were analyzed using multivariate methods (cluster and principal coordinate analysis). The analysis included specimens from Central Brazil and Paraguay, as well as the type material of several morphologically similar species. The results obtained showed that the samples investigated form two clearly distinct groups from the species hitherto recognized. Based on this morphometric analysis, two new species of Schizachyrium from South America are proposed, one of them occurring in Brazil and Paraguay (Schizachyrium angustispiculatum), and the other restricted to Brazil (S. vallsii). Moreover, Andropogon luxurians proved as a distinct taxon from Schizachyrium sanguineum, being proposed the new combination of the name for the genus Schizachyrium (S. luxurians). Description and illustrations of the two new species and the new combination are presented, as well as a key to separate them from other morphologically related species.
publishDate 2015
dc.date.none.fl_str_mv 2015-10
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/7804
Peichoto, Myriam Carolina; Welker, Cassiano Aimberê Dorneles; Solis Neffa, Viviana Griselda; Morphometric analysis of Schizachyrium Nees (Poaceae-Andropogoneae) reveals two new species from South America; American Society Of Plant Taxonomists; Systematic Botany; 40; 2; 10-2015; 461-473
0363-6445
1548-2324
url http://hdl.handle.net/11336/7804
identifier_str_mv Peichoto, Myriam Carolina; Welker, Cassiano Aimberê Dorneles; Solis Neffa, Viviana Griselda; Morphometric analysis of Schizachyrium Nees (Poaceae-Andropogoneae) reveals two new species from South America; American Society Of Plant Taxonomists; Systematic Botany; 40; 2; 10-2015; 461-473
0363-6445
1548-2324
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.bioone.org/doi/abs/10.1600/036364415X688727?journalCode=sbot
info:eu-repo/semantics/altIdentifier/doi/10.1600/036364415X688727
info:eu-repo/semantics/altIdentifier/url/http://www.ingentaconnect.com/content/aspt/sb/pre-prints/content-1400040
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Society Of Plant Taxonomists
publisher.none.fl_str_mv American Society Of Plant Taxonomists
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1844614305669971968
score 13.070432

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