Nova combinação e chave revisada para Dendrophorbium (Asteraceae - Senecioneae) no Brasil

Teles, Aristônio Magalhães

doi:10.1590/2175-7860201061119

Cited by 5 publications

(3 citation statements)

References 3 publications

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“…Hind (1993) reported nine species of Dendrophorbium occurring in Brazil, and Matzenbacher and Baptista (1997) suggested a new organization. Teles et al (2006) recorded a new species, raising to 11 the number of species known to occur in Brazil. Based on the work of Pelser et al (2007) using molecular markers (nrITS), Teles (2010) proposed a new taxonomic classification, grouping Senecio subnemoralis Dus� en and Dendrophorbium subnemoralis.…”

Section: Introductionmentioning

confidence: 99%

“…Teles et al (2006) recorded a new species, raising to 11 the number of species known to occur in Brazil. Based on the work of Pelser et al (2007) using molecular markers (nrITS), Teles (2010) proposed a new taxonomic classification, grouping Senecio subnemoralis Dusén and Dendrophorbium subnemoralis . Calvo and Roque (2018) described a new species ( Dendrophorbium capixabense ), whose morphology is very similar to that of other species of the genus, carrying a risk of misidentification.…”

Section: Introductionmentioning

confidence: 99%

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Palynotaxonomy of species of Dendrophorbium (Asteraceae: Senecioneae) occurring in Brazil

Martins,

Souza-Souza,

Leite

et al. 2023

Palynology

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This article presents a pollen study of 13 species of Dendrophorbium (Asteraceae: Senecioneae) occurring in Brazil. Dendrophorbium has species distributed in the South and Southeast regions of the Brazilian territory that were previously grouped in Senecio Myriocephalus sect. and later Dendrophorbium was elevated to the rank of genus, considering the section Myriocephalus as a synonym of Dendrophorbium. The aim of this study is to advance knowledge of the pollen characteristics of the genus and thus contribute to the taxonomy of the group. The botanical material was collected from specimens deposited in national herbaria. Floral buds were acetolysed for light microscopic analysis. Pollen sediments were mounted on slides with glycerinated gelatin and analyzed under a light microscope. Measurements were taken of the diameters and thickness of exine layers of pollen grains. Examination showed pollen grains to be monadic, isopolar, medium-sized, oblate-spheroidal to pro-late-spheroidal, and 3-colporate. The endoaperture has median constriction in most species, except in D. pellucidinerve. The sexine is thicker than the nexine and echinate, with large perforations at the base of echinae. The exine is caveate. Based on the results, it can be concluded that the pollen grains of the 13 Dendrophorbium species are homogeneous and can be differentiated by aperture shape and dimensions and echinus characteristics.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Palynotaxonomy of species of Dendrophorbium (Asteraceae: Senecioneae) occurring in Brazil

Martins,

Souza-Souza,

Leite

et al. 2023

Palynology

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show abstract

“…Cabrera e Senecio (BFG 2015) e estudos taxonômicos com a tribo são escassos, podendo-se citar os trabalhos de Baker (1884), Cabrera (1957), Cabrera & Klein (1975), Matzenbacher (1998) e Teles & Stehmann (2011). A partir do trabalho de Cabrera (1957), novos táxons foram descritos (e.g., Zardini 1979;Robinson 1980;Matzenbacher 1996Matzenbacher , 2009Teles et al 2006Teles et al , 2009Teles & Meireles 2010;Teles & Freitas 2013), combinados (e.g., Nordenstam 1994Matzenbacher & Baptista 1997;Teles 2010) e acrescidos à lista da flora brasileira.…”

Section: Introductionunclassified

A tribo Senecioneae (Asteraceae) em Minas Gerais, Brasil

Teles

Stehmann

2016

Rodriguésia

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ResumoSenecioneae está representada em Minas Gerais por oito gêneros e 41 espécies (Dendrophorbium 3 spp., Emilia 2 spp., Erechtites 3 spp., Graphistylis 5 spp., Hoehnephytum 1 sp., Pentacalia 1 sp., Pseudogynoxys 1 sp. e Senecio 25 spp.). Três espécies são culvitadas como ornamentais: Curio rowleyanus, Senecio flaccidus e S. tamoides. Seis espécies são novas ocorrências para o estado: Dendrophorbium fastigiaticephalum, Graphistylis argyrotricha, Senecio paulensis, S. paucijugus, S. pseudostigophlebius e S. stigophlebius. São apresentadas chaves de identificação para os gêneros e espécies, descrições, comentários sobre a taxonomia, distribuição geográfica e habitat, além de ilustrações das espécies estudadas. Palavras-chave: Biodiversidade, Compositae, flora, Senecio. AbstractSenecioneae is represented in Minas Gerais, Southeastern Brazil, by eight genera and 41 species (Dendrophorbium 3 spp., Emilia 2 spp., Erechtites 3 spp., Graphistylis 5 spp., Hoehnephytum 1 sp., Pentacalia 1 sp., Pseudogynoxys 1 sp., and Senecio 25 spp.). Three species are cultivated as ornamental: Curio rowleyanus, Senecio flaccidus and S. tamoides. Six species are new occurrences: Dendrophorbium fastigiaticephalum, Graphistylis argyrotricha, S. paulensis, S. paucijugus, S. pseudostigophlebius and S. stigophlebius. Identification key of genera and species from Minas Gerais, descriptions, and comments on the taxonomy, geographical distribution and habitats, besides illustrations are given.

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Senecio hortensiae (Senecioneae, Asteraceae): a new species from Espírito Santo, Brazil

Teles

Freitas

2013

Phytotaxa

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A new species of Senecio section Adamantina is here described as Senecio hortensiae (Senecioneae, Asteraceae), an endemic species from Parque Nacional dos Pontões Capixabas, Espírito Santo state, Brazil. This new species is recognised by the sessile leaves densely clustered at the median part of the stem and by the radiate capitula in a terminal lax panicle. It is closely related to Senecio graciellae but differs basically by the size and margins of the leaves, capitulescence and number of ray florets. Illustrations, comments, distribution map, and conservation status are provided for the new species. Additionally, a diagnostic key to the species of Senecio section Adamantina is provided.

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Nova combinação e chave revisada para Dendrophorbium (Asteraceae - Senecioneae) no Brasil

Cited by 5 publications

References 3 publications

Palynotaxonomy of species of Dendrophorbium (Asteraceae: Senecioneae) occurring in Brazil

Palynotaxonomy of species of Dendrophorbium (Asteraceae: Senecioneae) occurring in Brazil

A tribo Senecioneae (Asteraceae) em Minas Gerais, Brasil

Senecio hortensiae (Senecioneae, Asteraceae): a new species from Espírito Santo, Brazil

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