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| Registros recuperados: 36 | |
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| NAKAJIMA,JIMI NAOKI; SEMIR,JOÃO. |
| Uma listagem das espécies da família Asteraceae foi realizada no Parque Nacional da Serra da Canastra, situado no sudoeste do estado de Minas Gerais, entre fevereiro de 1994 a janeiro de 1998. Os exemplares coletados encontram-se depositados no herbário da Universidade Federal de Uberlândia, Minas Gerais (HUFU). Na Serra da Canastra, a família Asteraceae é a mais diversa em número de espécies com um total de 215 espécies, pertencentes a 66 gêneros e 11 tribos. As 27 espécies novas que foram descobertas pertencem a gêneros anteriormente monotípicos ou com poucas espécies, tais como Xerxes, Hololepis, Pseudobrickellia e Inulopsis, ou a vários gêneros com um grande número de espécies, tais como Lessingianthus, Chromolaena, Stevia, Mikania, Aspilia, Calea e... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Asteraceae; Compositae; Checklist; Serra da Canastra; Minas Gerais. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042001000400013 |
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| Franca,Rafael de Oliveira; De-Paula,Orlando Cavalari; Carmo-Oliveira,Renata; Marzinek,Juliana. |
| Ageratum has a complex circumscription, and recent studies have indicated its polyphyletism. The genus has been placed in the tribe Eupatorieae whose embryology is not fully known. Embryological data are conservative and important indicators of phylogenetic relationships and can improve family relationships. This study presents, for the first time in Eupatorieae, embryological data for Ageratum conyzoides and A. fastigiatum. Both species have common features of the family such as a unitegmic anatropous ovule, basal placentation, secretory tapetum, Polygonum megagametophyte, and Asterad embryogenesis. The data obtained reinforce the heterogeneity of the family embryology and show, for the first time, the anther wall development of the monocotyledonous type... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Compositae; Embryogenesis; Eupatorieae; Ontogeny; Phytomelanin. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062015000100008 |
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| WANG,CONGYAN; LIU,JUN; XIAO,HONGGUANG; ZHOU,JIAWEI; DU,DAOLIN. |
| ABSTRACT This study aims to determine the floristic characteristics of alien invasive seed plant species (AISPS) in China. There are a total of five hundred and thirteen AISPS, belonging to seventy families and two hundred and eighty-three genera. Seventy families were classified into nine areal types at the family level, and "Cosmopolitan" and "Pantropic" are the two main types. Two hundred and eighty-three genera were classified into twelve areal types at the genus level, and "Pantropic", "Trop. Asia & Amer. disjuncted", and "Cosmopolitan" are the three main types. These results reveal a certain degree of diversity among AISPS in China. The floristic characteristics at the family level exhibit strong pantropic characteristics. Two possible reasons... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alien invasive plant species; Floristic characteristics; China; Compositae. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000501791 |
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| Bernardes,Ebenézer C.S.; Benko-Iseppon,Ana M.; Vasconcelos,Santelmo; Carvalho,Reginaldo; Brasileiro-Vidal,Ana C.. |
| Endive (Cichorium endivia L.) and chicory (C. intybus L.) both have 2n = 18, but until now, there has been no detailed karyomorphological characterization. The present work evaluated five accessions of each species using FISH with rDNA probes and fluorochrome staining with CMA and DAPI. Both species presented distinct banding patterns after fluorochrome staining: while endive had proximal CMA++/DAPI- bands in the short arms of pairs 1, 2 and 3, chicory had proximal CMA-positive bands in chromosomes 1 and 3 and interstitial in the short arm of chromosome 8. Among endive accessions, FISH procedures revealed conserved position and number of 5S and 45S rDNA sites (two and three pairs, respectively), associated with the CMA-positive bands. Notwithstanding,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Compositae; Cichorieae; CMA/DAPI; RDNA sites; Chromosome rearrangements. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572013000300010 |
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| Angulo,María Betiana; Dematteis,Massimiliano. |
| Vernonia setososquamosa (Asteraceae, Vernonieae) ha sido considerada por diferentes autores como un sinónimo de V. remotiflora, como una variedad de este taxón o como una especie diferente. En este trabajo se analizó la morfología de los cromosomas y el polen de ambas entidades en busca de datos que permitan determinar el estatus de V. setososquamosa. Este último taxón mostró un número de cromosomas somáticos de 2n=2x=30, con el cariotipo compuesto por 22m + 6sm + 2st, mientras que V. remotiflora presentó 2n=2x=28 y una fórmula cariotípica con 22m + 4sm + 2st. El polen de estas entidades es tricolporado, equinolofado, con lagunas dispuestas en un patrón regular, pero los granos de V. setososquamosa presentaron lagunas polares, que resultaron ausentes en V.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cariotipo; Compositae; Cromosomas; Morfología polínica. |
| Ano: 2010 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0011-67932010000100002 |
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| Riva,Adriana; Pozner,Raúl; Freire,Susana E. |
| Recent molecular studies suggest that Senecio otites belonging to Senecio sect. Senecio ser. Otopteri should be removed from Senecio so that this large and taxonomically complicated genus would be monophyletic. In order to evaluate the taxonomic position of Senecio otites and the placement of series Otopteri, 13 species belonging to Senecio sect. Senecio ser. Otopteri, including S. otites, were examined for micromorphological characters of the style branches (stigmatic surface, stylearm apices) and anthers (filament collar, anther bases, anther appendages). Three states of these micromorphological characters were present in nearly all species of Senecio sect. Senecio ser. Otopteri: 1) the style-arms are apically convex or subconvex, papillate, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Asteraceae; Compositae; Micro-morphology; Section Otites; Senecio; Series Otopteri; South America. |
| Ano: 2009 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0011-67932009000200011 |
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| Appezzato-da-Glória,Beatriz; Cury,Graziela. |
| In the Brazilian Cerrado (neotropical savanna), the development of bud-bearing underground systems as adaptive structures to fire and dry periods can comprise an important source of buds for this ecosystem, as already demonstrated in the Brazilian Campos grasslands and North American prairies. Asteraceae species from both woody and herbaceous strata have subterranean organs that accumulate carbohydrates, reinforcing the adaptive strategy of these plants to different environmental conditions. This study aims to analyse the morpho-anatomy of underground systems of six species of Asteraceae (Mikania cordifolia L.f. Willd., Mikania sessilifolia DC, Trixis nobilis (Vell.) Katinas, Pterocaulon alopecuroides (Lam.) DC., Vernonia elegans Gardner and Vernonia... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anatomy; Buds; Compositae; Fructans; Stem tuber; Xylopodium. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652011000300017 |
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| Dematteis, M.; Angulo, M.B.. |
| Two new species of the genus Lessingianthus (Vernonieae, Asteraceae) from Brazil and Paraguay are described and illustrated. Lessingianthus cipoensis is characterized by the presence of solitary heads disposed in short branches and ovate to elliptical leaves. It has a certain resemblance to L. vestitus, which has more branched inflorescences, with long branches, and lanceolate to obovate-lanceolate leaves. Lessingianthus paraguariensis is closely related to L. asteriflorus and L. mollissimus, but it can be distinguished by the broadly elliptical leaves and the large size of the outer phyllaries. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Compositae; New species; South America; Taxonomy; Vernonia. |
| Ano: 2012 |
URL: http://www.repository.naturalis.nl/record/525043 |
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| Ribeiro,Rogério Neves; Teles,Aristônio M.. |
| ABSTRACT Lessingianthus spinifolius is here described and illustrated as a new species of the tribe Vernonieae (Asteraceae) from Chapada dos Veadeiros, State of Goiás, Brazil. The new species is thus far known only from the type locality. The characteristics that most differentiate L. spinifolius from congeners are: (i) leaf blade strongly revolute; and (ii) leaf blade with spines on the margins. The new species is similar to L. onopordioides due to both having a similarly shaped involucre and the involucre being eximbricate with lanceolate phyllaries. Taxonomic and ecological comments, a distribution map, conservation status assessment, and illustrations of the new species are provided. Additionally, Vernonia araneosa is resurrected from the synonymy of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brazil; Compositae; Endemism; Lepidaploinae; Vernonia. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062018000400521 |
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| Nicola,Marcela V; Freire,Susana E; Ariza Espinar,Luis. |
| Se proponen tres nuevas combinaciones en Oriastrum: Oriastrum minutum de Argentina y Chile y O. stuebelii var. abbreviatum y O. stuebelii var. argentinum de Argentina. Se cita a O. tontalensis como nuevo sinónimo de O. pulvinatum var. polymallum y a O. famatinae y O. stuebelii var. cryptum como nuevos sinónimos de O. stuebelii var. argentinum. Se designan nueve lectotipos para: Aldunatea chilensis, A. gnaphalioides, A. lycopodioides, Carmelita formosa, Chaetanthera stuebelii var. argentina, C. villosa, Egania acerosa, E. dioica y Tylloma limbatum. Adicionalmente, se incluyen ilustraciones de filarios y hojas de O. pulvinatum var. polymallum y O. tontalensis y una tabla comparativa de los caracteres diagnósticos de las variedades de O. stuebelii y O.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chaetanthera; Compositae; Lectotipos; Nomenclatura; Oriastrum; Sinónimos. |
| Ano: 2015 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0011-67932015000100005 |
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| MENDONÇA,CLAUDIA BARBIERI FERREIRA; GONÇALVES-ESTEVES,VANIA. |
| Foram estudados os grãos de pólen de sete táxons pertencentes à tribo Eupatorieae, ocorrentes na Restinga de Carapebus, Carapebus, Estado do Rio de Janeiro. São eles: Barrosoa atlantica King & Robins., B. betonicaeformis (DC.) King & Robins., Mikania belemii King & Robins., M. cordifolia Willd., M. glomerata Spreng., M. micrantha H.B.K., M. trinervis Hook & Arn. e Trichogoniopsis podocarpa (DC.) King & Robins. A tribo apresentou em comum, grãos de pólen pequenos a médios, oblato-esferoidais a prolato-esferoidais, tricolporados, sexina espinhosa e cavada. Os táxons puderam ser separados quando foram consideradas a forma polínica, as dimensões do espinho e a distância entre eles. Assim, foi possível formar dois... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Palynology; Compositae; Eupatorieae; Restinga. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042000000200009 |
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| Registros recuperados: 36 | |
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