Pteridophyte
Mostrando 1-12 de 13 artigos, teses e dissertações.
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1. Sporepolinic morphology of fluvial terrace sediments in the Western Amazon
ABSTRACT Morphological descriptions were made for pollen grains and spores extracted from samples from three sedimentary sections - Chandless 1, Purus 10 and Purus 30 - from fluvial terraces on the Chandless and Purus rivers, Acre State, Brazil. Level CH1-12 at Chandless 1 was C14-dated to 4861 - 5050 cal yr BP, P10-3 of Purus 10 was dated through the OSL me
Acta Bot. Bras.. Publicado em: 2020-03
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2. Sporepolinic morphology of fluvial terrace sediments in the Western Amazon
ABSTRACT Morphological descriptions were made for pollen grains and spores extracted from samples from three sedimentary sections - Chandless 1, Purus 10 and Purus 30 - from fluvial terraces on the Chandless and Purus rivers, Acre State, Brazil. Level CH1-12 at Chandless 1 was C14-dated to 4861 - 5050 cal yr BP, P10-3 of Purus 10 was dated through the OSL me
Acta Bot. Bras.. Publicado em: 11/11/2019
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3. Bryophyte and pteridophyte spores and other palynomorphs in quaternary marine sediments from Campos Basin, southeastern Brazil: Core BU-91-GL-05
This paper presents morphological descriptions and ecological data of cryptogam spores and other non-pollen palynomorphs from Quaternary sediments of Campos Basin, Rio de Janeiro, SE Brazil. The ages were derived from biostratigraphy of planktonic foraminifers and two radiocarbon dates, and suggest that sediment deposition started in the last 140,000 years B
Acta Bot. Bras.. Publicado em: 2015-06
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4. Comparative pharmacognosy of Pyrrosia petiolosa and Pyrrosia davidii
Pyrrosia petiolosa (Christ) Ching, Polypodiaceae, is an important medicinal pteridophyte used for the treatment of nephritis and bronchitis, while P. davidii (Giesenhagen. ex Diels) Ching, Polypodiaceae, often substitutes medicinal Pyrrosia in clinic. The present study was aimed to compare the pharmacognosy of P. petiolosa and P. davidii, including plant mor
Rev. bras. farmacogn.. Publicado em: 2014-08
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5. Pteridium catalensis SP.Nov., uma nova pteridófita fóssil do complexo carbonalítico Catalão I, Goiás / Pteridium catalensis SP. Nov.,a new pteridophyte fóssil from carbonatitic comples catalão
Pteridium catalensis sp. nov., pteridófita do Neógeno/Quaternário do município de Catalão, Goiás, é aqui erigida. Está representada por porções vegetativas e por estruturas férteis muito semelhantes às formas encontradas na Família Dennstaedtiaceae moderna e, especificamente, a do gênero Pteridium, com o qual pode ser relacionada. O material es
Publicado em: 2010
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6. Pteridófitas da Serra do Caraça, Minas Gerais, Brasil Belo Horizonte Minas Gerais Fevereiro de
The Serra do Caraça is located in the east border of Quadrilátero Ferrífero, in southern Serra do Espinhaço, comprising part of Catas Altas, Santa Bárbara and Mariana municipalities. The main preservation area is RPPN Santuário do Caraça with 10.187,89 ha. The altitude varies between 750 and 2072 m. The vegetation is composed of a mosaic of field and
Publicado em: 2010
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7. Pteridófitas da caatinga : lista anotada, análise da composição florística e padrões de distribuição geográfica.
This work represents the first comprehensive contribution to the knowledge of the pteridophyte flora of Caatinga vegetation (semi-arid region in northeastern Brazil and northern of Minas Gerais State). With the purpose to collecties and observies the species, localities along nine thousand kilometers of roads were visited. Samples deposited in regional herba
Publicado em: 2007
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8. FlorÃstica, aspectos ecolÃgicos e conservaÃÃo das pteridÃfitas ocorrentes no parque ecolÃgico JoÃo Vasconcelos Sobrinho (Caruaru-Pernambuco-Brasil)
In the Parque EcolÃgico JoÃo Vasconcelos Sobrinho the floristic survey of pteridophytes occurring in the site was conducted considering ecological aspects and studying the microhabitats and constancy index of species collected between the years of 2001 and 2002, relating these knowledge to the preservation of pteridophytes in the area. the Parque EcolÃgic
Publicado em: 2003
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9. Estudos taxonomicos na familia Thelypteridaceae (Polypodiopsida) no Estado de São Paulo, Brasil
A taxonomic survey of the species of Thelypteridaceae Pico Sermo in the São Paulo State, Brazil, was carried out as a contribution to the knowledge of the pteridophyte flora of the State. This study was based on material collected by the author, on observations of natural populations, and on revision of the available collections in Brazilian and foreign her
Publicado em: 2000
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10. Flora pteridofitica das matas ciliares da bacia do Rio Jacare-Pepira,Estado de São Paulo, Brasil
A floristic survey of the pteridophytes from three areas of Gallery Forest of the Jacaré-Pepira River Basin, located in São Paulo State, Brazil, was carried out as a contribution to the knowledge of the floristic composition of the foregoing forest formation as well as of the pteridophyte flora of State of São Paulo. In the 3 areas considered, 91 species
Publicado em: 1993
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11. Localization of Ribulose Bisphosphate Carboxylase in the Guard Cells by an Indirect, Immunofluorescence Technique 1
Ribulose bisphosphate carboxylase, a key enzyme in the photosynthetic carboxylation process, has been localized through an indirect immunofluorescent technique in the guard cells of some of the 41 species of plants examined. This sample includes 17 families of both dicotyledons and monocotyledons, one gymnosperm, and one pteridophyte. Plants were selected to
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12. Enzyme Dynamics of the Resurrection Plant Selaginella lepidophylla (Hook. & Grev.) Spring during Rehydration 1
The activities of 10 enzymes involved in carbohydrate metabolism were measured in both desiccated and rehydrated fronds of the desiccation-tolerant pteridophyte Selaginella lepidophylla (Hook. & Grev.) Spring. Enzyme conservation was defined as the ratio of desiccated to hydrated frond enzyme activity. The mean level of conservation was 74%, with nine of the