Consulta: subjectFacets:"Rubioideae"
Registros recuperados: 10
Data/hora: 07/06/2024 00:45:09

Woodiness within the Spermacoceae–Knoxieae alliance (Rubiaceae): retention of the basal woody condition in Rubiaceae or recent innovation?
Provedor de dados: 16
Autores: Lens, F.; Groeninkx, I.; Smets, E.; Dessein, S.
† Background and Aims The tribe Spermacoceae is essentially a herbaceous Rubiaceae lineage, except for some species that can be described as ‘woody’ herbs, small shrubs to treelets, or lianas. Its sister tribe Knoxieae contains a large number of herbaceous taxa, but the number of woody taxa is higher compared to Spermacoceae. The occurrence of herbaceous and woody species within the same group raises the question whether the woody taxa are derived from herbaceous taxa (i.e. secondary woodiness), or whether woodiness represents the ancestral state (i.e. primary woodiness). Microscopic observations of wood anatomy are combined with an independent molecular phylogeny to answer this question.  † Methods Observations of wood anatomy of 21 woody Spermacoceae and...
Tipo: Article / Letter to the editor
Palavras-chave: Knoxieae; LM; Primary woodiness; Rubiaceae; Rubioideae; Secondary woodiness; Spermacoceae; Wood anatomy; 42.56.
Ano: 2009
URL: http://www.repository.naturalis.nl/record/428974

A new species of Colletoecema (Rubiaceae) from southern Cameroon with a discussion of relationships among basal Rubioideae
Provedor de dados: 16
Autores: Sonké, B.; Dessein, S.; Taedoumg, H.; Groeninckx, I.; Robbrecht, E.
Colletoecema magna, a new species from the Ngovayang Massif (southern Cameroon) is described and illustrated. A comparative morphological study illustrates the similar placentation and fruit anatomy of the novelty and Colletoecema dewevrei, the only other species of the genus. Colletoecema magna essentially differs from C. dewevrei by its sessile flowers and fruits, the corolla tube that is densely hairy above the insertion point of the stamens and the anthers that are included. Further characters that separate the novelty are its larger leaves, more condensed inflorescences, and larger fruits. Its position within Colletoecema is corroborated by atpB-rbcL and rbcL chloroplast sequences. The relationships among the basal lineages of the subfamily...
Tipo: Article / Letter to the editor
Palavras-chave: Rubioideae; Rubiaceae; Colletoecema; Chloroplast DNA; Ngovayang massif.
Ano: 2008
URL: http://www.repository.naturalis.nl/record/525494

Contributions to the Wood Anatomy of the Rubioideae (Rubiaceae)
Provedor de dados: 16
Autores: Jansen, S.; Lens, F.; Ntore, S.; Piesschaert, F.; Robbrechf, E.; Smets, E.
The secondary xylem of Craterispermeae, Coussareeae, Morindeae s.str., Prismatomerideae, Pauridiantheae, Urophylleae, and Triainolepideae (Rubiaceae, Rubioideae) is described and illustrated in detail. Genera that were previously placed in the Morindeae or Psychotrieae such as Damnacanthus, Lasianthus, Saldinia, and Trichosfachys are also included. Wood anatomical characters are compared with recent phylogenetic insights into the study group on the basis of molecular data. The observations demonstrate that the delimitation and separation of several taxa from the former Coussareeae/Morindeae/Prismatomerideae/Psychotrieae aggregate is supported by wood anatomical data. The Coussareeae can be distinguished from the other Rubioideae by their scanty parenchyma,...
Tipo: Article / Letter to the editor
Palavras-chave: Rubiaceae; Rubioideae; Systematic wood anatomy; 42.58.
Ano: 2001
URL: http://www.repository.naturalis.nl/record/421859

A synopsis of Galianthe (Rubiaceae) in Rio Grande do Sul, Southern Brazil, and a new endemic species from Serra Geral
Provedor de dados: 39
Autores: Florentín,Javier Elías; Florentin,Mariela Nuñez; Cabral,Elsa Leonor.
ABSTRACT Thirteen species of the genus Galianthe have been recorded for state of Rio Grande do Sul, Brazil. The species are distributed among seven biomes, one of which contains all thirteen taxa-Subtropical Seasonal Forest. Herein a new endemic species, G. riograndensis J. Florentín &amp; E.L. Cabral, is described, illustrated and differentiated from all other species of the genus by having 3-4 verticillate leaves and a long bifid style. In addition, the pollen grain morphology and the seed micromorphology of the new species are described and illustrated, and the conservation status assessed according to IUCN criteria. Moreover, G. chodatiana is recorded for the first time from the state, and a lectotype for G. equisetoides is designated. Most of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Galianthe; Rubioideae; Southern Brazil; Spermacoceae; Taxonomy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000400619

A família Rubiaceae na Reserva Biológica Guaribas, Paraíba, Brasil: subfamília Rubioideae
Provedor de dados: 39
Autores: Pereira,Maria do Socorro; Barbosa,Maria Regina de Vasconcellos.
Este trabalho consiste no levantamento dos representantes de Rubiaceae subfamília Rubioideae na Reserva Biológica Guaribas, Estado da Paraíba, Brasil. Foram realizadas coletas intensivas no período de outubro/2000 a outubro/2001, as quais resultaram em 17 espécies e nove gêneros de Rubioideae. Os gêneros com maior número de espécies foram Psychotria L. (seis) e BorreriaG. Mey. (quatro). Coccocypselum P. Browne, Declieuxia Kunth, Diodia L., Mitracarpus Zucc. ex Roem. &amp;amp; Schult., PalicoureaAubl., RichardiaL. e Staelia Cham. &amp;amp; Schltdl. apresentaram uma única espécie cada. Perama hirsuta Aubl., de posição taxonômica incerta na família, também foi tratada neste trabalho. São apresentados chave, descrições, comentários e ilustrações dos táxons.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rubiaceae; Rubioideae; Mata Atlântica; Taxonomia.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062006000200021

Borreria apodiensis (Rubiaceae: Spermacoceae), a new species from Ceará and Rio Grande do Norte, Brazil
Provedor de dados: 39
Autores: Souza,Elnatan Bezerra de; Miguel,Laila Mabel; Cabral,Elsa Leonor; Nepomuceno,Francisco Álvaro Almeida; Loiola,Maria Iracema Bezerra.
ABSTRACT A new species of Borreria (Rubiaceae) from Chapada do Apodi in northeastern Brazil is described and illustrated. A distribution map, illustrations, a conservation assessment, a key to morphologically similar taxa and images of the seeds and pollen grains are provided.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Caatinga; Northeastern Brazil; Pollen grains; Rubioideae; Seeds; Semiarid; Taxonomy.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000200283

Comparative wood anatomy of species of Psychotria L. (Rubiaceae) in Atlantic Rainforest remnants of Rio de Janeiro State, Brazil
Provedor de dados: 39
Autores: Marques,Jonas B. C.; Callado,Cátia H.; Rabelo,Guilherme R.; Silva Neto,Sebastião J. da; Cunha,Maura da.
ABSTRACTPsychotria is the largest Rubiaceae genus and one of the most abundant in the Atlantic Rainforest of Rio de Janeiro State. The present work aims to characterize and compare the wood of nine of these species. ThePsychotria wood were characterized by: slightly distinct growth rings; diffuse porosity; solitary vessels or on radial multiples of 2-6 or clusters of 3-5 vessel elements, with terminal and lateral simple perforation plates and vestured and alternate intervessel and vessel-ray pits; septate fiber-tracheids; and rare axial parenchyma. Although, the wood anatomy of thePsychotria may be considered homogeneous, the statistical analyses, based on qualitative and quantitative features, allowed the segregation of the species and indicated the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ilha Grande; Psychotriae; Rubioideae; Tropical Forest; Wood diagnostic characters.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062015000300433

Pollen morphology of some species of Spermacoceae s.s. (Rubiaceae) of the Atlantic Forest, Rio de Janeiro, Brazil
Provedor de dados: 39
Autores: Gonçalves-Esteves,Vania; Vieira,Gabrielle Reboredo Menezes; Carvalho,Renata Jacomo Paixão de; Crespo,Sonia Regina de Melo; Mendonça,Claudia Barbieri Ferreira.
ABSTRACT This work aimed to morphologically characterize 22 species of Spermacoceae s.s found in the Atlantic Forest in the state of Rio de Janeiro with the purpose of improving palynological knowledge of the studied species. The studied species included six species of Borreria and Denscantia cymosa, Emmeorhiza umbellata, Hexasepalum apiculatum, H. radula, H. teres, Manettia fimbriata, Mitracarpus eichleri, M. frigidus, M. hirtus, M. lhotzkyanus, M. megapotamicus, Oldenlandia salzmannii, Pentodon pentandrus, Richardia brasiliensis, Richardia scabra and Spermacoce rubescens. Acetolysed pollen grains were analyzed using light (LM) and scanning electron miscroscopy (SEM). The pollen grains varied in size (polar diameter) from medium to large, with the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gentianales; Multivariate analysis; Palynology; Rubioideae; Systematics.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000200243

Faramea baturitensis (Rubiaceae: Coussareeae), a new species from “Serra de Baturité,” Northeast Brazil
Provedor de dados: 39
Autores: 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

Análise comparativa da anatomia da madeira de 41 espécies de Rubiaceae sob enfoque taxonômico
Provedor de dados: 51
Autores: Baldin,Talita; Siegloch,Anelise Marta; Cardoso Marchiori,José Newton; Denardi,Luciano.
Rubiaceae é uma das famílias mais complexas do ponto de vista taxonômico, fato comprovado pelas inúmeras alterações ocorrentes ao longo dos anos na sua organização interna. O presente estudo investiga a madeira de 41 espécies, com base na revisão de literatura e verifica através da análise multivariada a formação de grupos e posicionamento das espécies nas subfamílias Ixoroideae, Rubioideae e Cinchonoideae. Pode-se verificar que o grupo apresenta-se estruturalmente homogêneo, devido ao grande número de caracteres anatômicos compartilhados, como já havia sido afirmado por muitos pesquisadores da área. As espécies não se agruparam totalmente de acordo com suas subfamílias. A análise também se mostra favorável a passagem do gênero Calycophyllum para a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Análise de agrupamento; Anatomia da madeira; Cinchonoideae; Lxoroideae; Rubioideae; Taxonomia.
Ano: 2016
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722016000400005