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dc.contributor.author
Angulo, Maria Betiana
dc.contributor.author
Dematteis, Massimiliano
dc.date.available
2017-06-21T19:08:59Z
dc.date.issued
2014-11
dc.identifier.citation
Angulo, Maria Betiana; Dematteis, Massimiliano; A new species and a new synonym in the South American genus Lessingianthus (Vernonieae, Asteraceae); Magnolia Press; Phytotaxa; 186; 4; 11-2014; 207-214
dc.identifier.issn
1179-3155
dc.identifier.uri
http://hdl.handle.net/11336/18559
dc.description.abstract
Lessingianthus Robinson (1988a: 939) is one of the largest genera of tribe Vernonieae Cassini (1819: 203), with 133 species distributed in South America including Argentina, Bolivia, Brazil, Colombia, Paraguay, Peru, Uruguay and Venezuela (Robinson 1999). The species are perennial herbs or shrubs with xylopodia, having medium or largesized heads and seriate-cymose synflorescences (Robinson 1999). The genus comprises the species initially placed in Vernonia sect. Lepidaploa (Cassini 1817: 66) Candolle (1836: 26) subsect. Macrocephalae Bentham (1873: 229). Lessingianthus can be distinguished from the remaining genera of the tribe by its apical anther appendages without glands, styles without basal node, cubic crystals on the ovary wall, and pollen type B (Dematteis 2006, Robinson 2007, Angulo & Dematteis 2010, 2014). The basic chromosome number of the genus is x=16, and the genus has the greatest number of polyploid species and the highest ploidy level within the tribe (Angulo & Dematteis 2012). Since the description of Lessingianthus (Robinson 1988a), there have been a few problems in its generic limits. The single modification carried out by Dematteis (2007) has been the transfer of Lessingianthus subgen. Oligocephalus Robinson (1988a: 949) to the genus Chrysolaena Robinson (1988b: 956). After that, taxonomic studies carried out in this genus have focused on the description of new species and the resolution of nomenclatural specific problems (Dematteis 2006, 2008, Borges & Dematteis 2008, Dematteis & Angulo 2010, 2012). Nevertheless, several species still included in Vernonia have not been examined and, consequently, their taxonomic positions remain uncertain. In this paper, after the intense herbarium revision of species still included in Vernonia, we conclude that an accepted species name, V. oxyodonta Malme (1932: 19), should be placed to the synonymy of L. glabratus (Lessing 1829: 294) Robinson (1988a: 943) because the type material of V. oxyodonta is morphologically referable to L. glabratus. All the other specimens recognized as V. oxyodonta constitute a separate species and, therefore, should be formally described as a new species. Additionally, one taxon previously placed in Vernonia as V. pseudoincana (Hieronymus 1897: 689) Cabrera (1999: 110) is transferred to Lessingianthus.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Magnolia Press
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
Lessingianthus
dc.subject
Species
dc.subject
Taxonomy
dc.subject.classification
Ciencias de las Plantas, Botánica
dc.subject.classification
Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
A new species and a new synonym in the South American genus Lessingianthus (Vernonieae, Asteraceae)
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2015-11-03T15:19:17Z
dc.identifier.eissn
1179-3163
dc.journal.volume
186
dc.journal.number
4
dc.journal.pagination
207-214
dc.journal.pais
Nueva Zelanda
dc.journal.ciudad
Auckland
dc.description.fil
Fil: Angulo, Maria Betiana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Botánica del Nordeste (i); Argentina
dc.description.fil
Fil: Dematteis, Massimiliano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Botánica del Nordeste (i); Argentina
dc.journal.title
Phytotaxa
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.11646/phytotaxa.186.4.4
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://biotaxa.org/Phytotaxa/article/view/phytotaxa.186.4.4


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