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| Registros recuperados: 2.235 | |
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| Silva,Rejane Maria da; Ribeiro,Rayane de Tasso Moreira; Souza,Renata Janaína Carvalho de; Oliveira,Antônio Fernando Morais de; Silva,Suzene Izídio da; Gallão,Maria Izabel. |
| ABSTRACT Biosynthesized from very long-chain fatty acid wax precursors, n-alkanes make a valuable contribution to the taxonomy of plants. The alkane components of foliar epicuticles of seven Neotropical species of Lecythidaceae were investigated: Bertholletia excelsa, Cariniana legalis, Couroupita guianensis, Eschweilera alvimii, Eschweilera ovata, Gustavia augusta and Lecythis pisonis. Specimens were collected in the metropolitan area of Recife, Pernambuco, and their n-alkane fractions were analyzed by gas chromatography. The chemical relationships among the species were then evaluated using cophenetic correlation and UPGMA. Among the seven species, a total of 15 n-alkanes, with 21-35 carbon atoms, were identified and formed a consistent group of B.... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Lecythidaceae; Neotropics; Taxonomy; Tropical rain forest; Wax. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000100137 |
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| Araújo,Rita de Cássia Matos dos Santos; Nunes,Teonildes Sacramento; Saba,Marileide Dias; Andrade,Brunelle Ramos; Nascimento,Anacleide Pereira do; Santos,Francisco de Assis Ribeiro dos. |
| ABSTRACT This study aims to expand knowledge of the pollen morphology of Passifloraceae and contribute to the taxonomic delimitation of the group by morphologically characterizing pollen grains of species that occur in the Brazilian state of Bahia. Thirty-six species occur in the state, one of the genus Mitostemma (M. glaziovii) and 35 of the genus Passiflora. Pollen samples were acetolysed, measured, and described using light and scanning electron microscopy. The results group the studied species into four pollen types based mainly on aperture type and number, opercular variation, and the presence/absence of ornamentation elements inside the lumina of the reticulum: Pollen type I - species belonging to the subgenera Astrophea and Deidamioides; pollen type... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brazil; Mitostemma; Passiflora; Palynology; Pollen morphology; Taxonomy. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000100054 |
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| Caires,Claudenir Simões; Proença,Carolyn Elinore Barnes. |
| Three taxonomic changes are proposed based on intensive collecting of Viscaceae within the Distrito Federal, Brazil. Phoradendron andersonii Rizzini, previously a synonym of P. perrottetii (DC.) Eichler is reinstated based on the following combination of characters: young internodes compressed with sharp angles at the distal ends, short spikes to 2.5 cm long, articles with intermixed male and female flowers, biseriate flowers, and dirty yellow fruits. Phoradendron irwinianum Kuijt is synonymized under P. apiciflorum Rizzini, previously known only from the type from western Minas Gerais. Finding of the type collection of P. brachyklados Rizzini, incorrectly quoted in the protologue, led to the synonymization proposal of this species under P. hexastichum... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cerrado; Distrito Federal; Hemiparasite; Taxonomy. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062007000200012 |
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| Ferreira,Marcos Gonçalves; Absy,Maria Lúcia; Gonçalves-Esteves,Vânia. |
| A pollen morphology study of the Gentianaceae Juss. of Reserva Florestal Adolpho Ducke (Manaus, Brazil) was performed. The pollen grains of the studied species varied morphologically in their pollen units (tetrads or monads), size (small, medium and large), shape (oblate, suboblate, oblate spheroidal, spheroidal, prolate spheroidal and prolate), polarity (heteropolar, isopolar or subisopolar), symmetry (bilateral or radial) and number and type of aperture (3-colporate and 1-3porate). In relation to ornamentation, pollen grains had a sexine that was psilate in the Voyria species, microreticulate in Voyriella parviflora and reticulate heterobrochate in Tachia grandiflora and Irlbachia alata. The exine in I. alata showed great variability in the size and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazon forest; Neotropical species; Palynology; Taxonomy. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062012000400020 |
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| Magnago,Altielys Casale; Henkel,Terry; Neves,Maria Alice; Silveira,Rosa Mara Borges da. |
| ABSTRACT Ongoing surveys of macrofungi in the Brazilian Atlantic Forest ecoregion continue to uncover a diverse assemblage of ectomycorrhizal fungi. A new species of Boletaceae, Singerocomus atlanticus sp. nov., is described. Singerocomus rubriflavus, previously known only from Guyana, is recorded for the first time from the Brazilian Atlantic Forest. Phylogenetic data, macro- and microscopic illustrations, and comments are presented for each species. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atlantic Forest; Boletoid fungi; ITS and LSU sequences; Neotropics; Taxonomy. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062018000200222 |
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| Wartchow,Felipe; Maia,Leonor Costa; Cavalcanti,Maria Auxiliadora de Queiroz. |
| We analyzed specimens identified as Amanita muscaria, some recently collected and others already deposited in herbaria, in Brazil. We concluded that two subspecies of A. muscaria occur in Brazil: A. muscaria var. muscaria; and A.muscaria var. flavivolvata. The first taxon was found in association with Castanea sativa, and the second (one specimen only) was found in association with Pinus and Eucalyptus spp. Morphologically, A. muscaria var. flavivolvata is distinguished by a shallower subhymenium and by basidiospores that are more elongated than are those of A. muscaria var. muscaria, which is the more widely known subspecies. We present descriptions, discussions, illustrations and a dichotomous key for these two subspecies. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agaricales; Basidiomycota; Mushroom; Taxonomy. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100005 |
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| Moreira,Marina Muniz; Barberena,Felipe Fajardo Villela Antolin; Lopes,Rosana Conrado. |
| Orchidaceae is one of the largest and most diverse plant families in the world. The number of floristic studies of this family in Rio de Janeiro state, Brazil, has increased significantly in recent years. However, only a few such studies have been conducted in areas of restinga vegetation and none of those have examined the similarity, in terms of orchid diversity, among such areas. The present study sought to improve our knowledge of the Orchidaceae diversity occurring in Grumari restinga, as well to compare the diversity of orchids among Grumari and other restinga areas using cluster analysis. We found 15 genera and 19 species. Cluster analysis demonstrated that restingas located on islands are considerably different from those on the mainland, and no... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Conservation; Orchids; Taxonomy. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062014000300003 |
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| Jardim,Jomar Gomes; Souza,Elnatan Bezerra de; Loiola,Maria Iracema Bezerra. |
| ABSTRACT As part of an ongoing study of the taxonomy and systematics of Rubiaceae of the state of Ceará, Brazil, a new species, Faramea baturitensis, is here recognized, described, and illustrated. The new species occurs in “Serra de Baturité,” a relic of the Atlantic Forest. Detailed data on the distribution, habitat, phenology, and conservation status of the new species, as well as a key to species of Faramea in Ceará, are provided. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atlantic Forest; Endemism; Floristics; Rubioideae; Taxonomy. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000400778 |
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| Menini Neto,Luiz; Forzza,Rafaela Campostrini; van den Berg,Cassio. |
| Pseudolaelia is a genus endemic to eastern Brazil. The species are often epiphytes on Velloziaceae or are saxicolous, predominantly on granitic and gneissic outcrops (inselbergs) in the Atlantic Forest and, less often, in the campos rupestres (dry, rocky grasslands) of the cerrado (savanna) and caatinga (shrublands). The genus is characterized by homoblastic pseudobulbs, long rhizomes, long and usually slender inflorescences, racemes or panicles, bearing pink, yellow or whitish flowers, labellum often 3-lobed, with simple, fimbriate or erose margin, semi-cylindrical or claviform column, cuniculus present. Twelve species are recognized; seven binomials are placed in synonymy. Of those seven, three are considered illegitimate because, contrary to the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Eastern Brazil; Campo rupestre; Conservation; Inselberg; Taxonomy. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000200015 |
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| Couto, Dayvid Rodrigues; Fontana, André Paviotti; Kollmann, Ludovic Jean Charles; Manhães, Vitor da Cunha; Francisco, Talitha Mayumi; Cunha, Gláucio de Mello. |
| Neste estudo, avaliamos a composição florística de epífitos vasculares em remanescentes de Floresta Estacional Semedicidual na bacia hidrográfica do rio Itapemirim, sul do estado do Espírito Santo, com o intuito de analisar sua similaridade com outras florestas semidecidual estudadas no Brasil. Excursões quinzenais foram realizadas entre junho de 2008 a maio de 2009 e os epífitos coletados e registrados (55 espécies, 34 gêneros e seis famílias). Orchidaceae, com 21 espécies, foi a mais rica, enquanto os gêneros com o maior riqueza foram Tillandsia (7 spp.), Rhipsalis (4), Aechmea, Epidendrum e Peperomia, com três espécies cada. A categoria ecológica mais representativa foi holoepífita característica com 84% das espécies. O ambiente mais importante para a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 2.03.00.00-0 Conservação Rio Itapemirim Orchidaceae Serra do Caparaó Sudeste do Brazil taxonomia Botânica Caparaó Mountains; Conservation; Itapemirim river; Orchidaceae; Southeastern Brazil; Taxonomy. |
| Ano: 2016 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/31320 |
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| Azevedo, Francislainy Pereira de; Conceição, Adilva de Souza. |
| Senna includes about 300 species with circumtropical distribution, widely represented in the Americas, also occurring in Africa, Australia, Asia and Oceania. The genus is represented in Brazil by 80 species, of which 26 are endemic. The Serra Geral de Licínio de Almeida (SGLA), situated in the central portion of the Cadeia do Espinhaço, state of Bahia, Brazil, presents areas relatively little studied, with great potential for the registration of new information about Brazilian biodiversity. The floristic survey of Senna in the SGLA included analysis of specimens collected from February 2012 to October 2013. The analyses were supplemented with dried collections from the following herbaria: ALCB, BHCB, HUEFS, HUNEB, HRB, MBM and SPF.The genus is represented... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biológicas; Botânica; Florística floristics; Taxonomy; Cerrado; Espinhaço Range. Botânica. |
| Ano: 2017 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/32030 |
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| Silva, Mariana Lessa Carneiro da; Rangel, Elisangela Reis; Lansac-Tôha, Fabio Amodêo; Schwind, Leilane Talita Fatoreto; Joko, Ciro Yoshio. |
| The pictorial key contributes to taxonomic analysis, as it lists the species found in a given environment, and points out the morphological characteristics that differs one specific taxon from the others. Arcellidae Ehrenberg, 1830 is one of the testate amoebae families with highest representativity in terms of richness and abundance, including three genera, that Arcella shows greater dispersion in different types of aquatic biotopes. The zooplankton community in the Paranoá Lake has been extensively studied over the decades. However, there are no studies on testate amoebae in this environment. The study aimed to develop a pictorial key to help in the identification of Arcella in the Paranoá Lake. Samples were taken with plankton net at 13 sites in the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 2.04.05.00-6 protist; Taxonomy; Biological diversity; Plankton; Arcellidae; Center west Taxonomia dos Grupos Recentes. |
| Ano: 2016 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/29187 |
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| Registros recuperados: 2.235 | |
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