Pollen morphology and implications for the taxonomy of the genus Chrysolaena (Vernonieae, Asteraceae)

dc.creatorVia Do Pico, Gisela Mariel
dc.creatorDematteis, Massimiliano
dc.date2013-02-26
dc.identifierhttp://hdl.handle.net/11336/2285
dc.identifierVia Do Pico, Gisela Mariel; Dematteis, Massimiliano; Pollen morphology and implications for the taxonomy of the genus Chrysolaena (Vernonieae, Asteraceae); American Association of Stratigraphic Palynologists Foundation; Palynology; 37; 2; 26-2-2013; 177-188
dc.identifier0191-6122
dc.identifier1558-9188
dc.descriptionThis study aims at finding new morphological characters to evaluate the taxonomic position of species in the genus Chrysolaena (Vernonieae, Asteraceae) as suggested by the current classification of tribe Vernonieae. We characterized the morphology of pollen grains in all 18 species of Chrysolaena. Results show that all studied species possess pollen grains of type ?C?, which is therefore characteristic of the genus. This pollen type is 3-colporate, echinolophate, oblate-spheroidal, with a total of 29 lacunae, including the polar lacuna, but lacking the equatorial lacuna. Chrysolaena is considered stenopalynous due to the fact that the pollen type in most of the species is similar. Nevertheless, variation in the size of pollen grains allowed us to identify three groups of taxa: small, medium-sized and large, respectively. Pollen morphology is a useful taxonomic marker, in addition to other morphological and molecular characters defining the genus.
dc.descriptionFil: Via Do Pico, Gisela Mariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Botánica del Nordeste (i); Argentina
dc.descriptionFil: Dematteis, Massimiliano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Botánica del Nordeste (i); Argentina
dc.formatapplication/pdf
dc.formatapplication/pdf
dc.languageeng
dc.publisherAmerican Association of Stratigraphic Palynologists Foundation
dc.relationinfo:eu-repo/semantics/altIdentifier/url/http://www.tandfonline.com/doi/abs/10.1080/01916122.2012.749309
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/10.1080/01916122.2012.749309
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rightshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subjectASTERACEAE
dc.subjectCHRYSOLAENA
dc.subjectPOLLEN MORPHOLOGY
dc.subjectTAXONOMY
dc.subjectVERNONIEAE
dc.subjecthttps://purl.org/becyt/ford/1.6
dc.subjecthttps://purl.org/becyt/ford/1
dc.titlePollen morphology and implications for the taxonomy of the genus Chrysolaena (Vernonieae, Asteraceae)
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:ar-repo/semantics/artículo
dc.typeinfo:eu-repo/semantics/publishedVersion


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