Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 4
Primeira ... 1 ... Última
Imagem não selecionada

Imprime registro no formato completo
Las especies del género Schwartzia (Complejo Norantea, Marcgraviaceae) en Brasil Darwiniana
Giraldo-Cañas,Diego.
Schwartzia es un pequeño género de la familia neotropical Marcgraviaceae que comprende 17 especies. Éste se distribuye en bosques húmedos de tierras bajas o en bosques montanos de niebla desde Costa Rica hasta el sur de Brasil y también en las Antillas Menores. En esta contribución se tratan tres especies, todas endémicas de Brasil, una de las cuales se describe como nueva. Cada taxón se describe y además se brindan datos acerca de su distribución geográfica y ecología. Además se provee una clave para la identificación de los taxones presentes en Brasil.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Flora; Brasil; Marcgraviaceae; Taxonomía; Norantea; Schwartzia.
Ano: 2004 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0011-67932004000100008
Imagem não selecionada

Imprime registro no formato completo
Palynological Variation in Balsaminoid Ericales. I. Marcgraviaceae Naturalis
Lens, F.; Dressler, S.; Vinckier, S.; Janssens, S.; Dessein, S.; Van Evelghem, L.; Smets, E..
Background and Aims Marcgraviaceae are a rather small family of seven genera and approx. 130 neotropical species. This study aims to present a detailed palynological survey of the family in order to comment on the intrafamily relationships and possible correlations with pollinators. Methods In total, 119 specimens representing 67 species and all genera are observed using light microscopy and scanning electron microscopy. Furthermore, eight species from five genera are studied with transmission electron microscopy. Key Results Our results show that pollen grains of Marcgraviaceae are small (20–35 mm), have three equatorial apertures, granules on the colpus membrane, oblate spheroidal to prolate spheroidal shapes, mainly psilate to perforate ornamentations,...
Tipo: Article / Letter to the editor Palavras-chave: Balsaminoids; Ericales; Marcgraviaceae; Neotropics; Orbicules; Palynology; SEM; TEM.
Ano: 2005 URL: http://www.repository.naturalis.nl/record/407283
Imagem não selecionada

Imprime registro no formato completo
Relationships within balsaminoid Ericales: a wood anatomical approach Naturalis
Lens, F.; Dressler, S.; Jansen, S.; Van Evelghem, L.; Smets, E..
Wood samples of 49 specimens representing 31 species and 11 genera of woody balsaminoids, i.e., Balsaminaceae, Marcgraviaceae, Pellicieraceae, and Tetrameristaceae, were investigated using light microscopy and scanning electron microscopy. The wood structure of Marcgraviaceae, Pellicieraceae, and Tetrameristaceae is characterized by radial vessel multiples with simple perforation plates, alternate vessel pitting, apotracheal and paratracheal parenchyma, septate libriform fibers, and the presence of raphides in ray cells. Tetrameristaceae and Pellicieraceae are found to be closely related based on the occurrence of unilaterally compound vessel-ray pitting and multiseriate rays with long uniseriate ends. The narrow rays in Pelliciera are characteristic of...
Tipo: Article / Letter to the editor Palavras-chave: Balsaminaceae; Balsaminoid clade; Ericales; Marcgraviaceae; Paedomorphism; Pellicieraceae; Tetrameristaceae; Wood anatomy; 42.40.
Ano: 2005 URL: http://www.repository.naturalis.nl/record/407273
Imagem não selecionada

Imprime registro no formato completo
Woody woodpecker enjoys soft drinks: the blond-crested woodpecker seeks nectar and pollinates canopy plants in south-eastern Brazil Biota Neotropica
Rocca,Márcia A.; Sazima,Marlies; Sazima,Ivan.
Insects are the staple diet of woodpeckers, but some species also habitually feed on fruits. A few woodpecker species are recorded as flower visitors for nectar intake. We report here on the blond-crested woodpecker (Celeus flavescens) taking nectar from flowers of two canopy species, Spirotheca passifloroides (Bombacaceae) and Schwartzia brasiliensis (Marcgraviaceae), in the Atlantic forest of south-eastern Brazil. Spirotheca passifloroides blooms for three months in the austral winter, whereas S. brasiliensis blooms for two months in the summer. Flowers of both species produce large amounts of dilute nectar. Celeus flavescens visits several flowers per plant touching the anthers and stigmas with its head and throat, and thus acts as a pollen vector. We...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Celeus flavescens; Picidae; Spirotheca passifloroides; Bombacaceae; Schwartzia brasiliensis; Marcgraviaceae; Ornithophily.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032006000200027
Registros recuperados: 4
Primeira ... 1 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional