Use este identificador para citar ou linkar para este item: http://repositorio.ufc.br/handle/riufc/59067
Tipo: Artigo de Periódico
Título: Systematic consideration of petiole anatomy of species of Echinodorus Richard (Alismataceae) from north-eastern Brazil
Autor(es): Matias, Lígia Queiroz
Soares, Arlete
Scatena, Vera Lúcia
Palavras-chave: Echinodorus;Alismataceae;Anatomy;Aquatic plants;Hydrophytes;Caatinga
Data do documento: 2007
Instituição/Editor/Publicador: Flora
Citação: MATIAS, Lígia Queiroz; SOARES, Arlete; Scatena, Vera Lúcia. Systematic consideration of petiole anatomy of species of Echinodorus Richard (Alismataceae) from north-eastern Brazil. Flora, [s.l.], v. 202, p. 395–402, 2007.
Abstract: Petiole anatomy of the north-eastern Brazilian species Echinodorus glandulosus, E. palaefolius, E. pubescens, E. subalatus, E. lanceolatus and E. paniculatus were examined. All species had petioles with an epidermis composed of tabular cells with thin walls. The chlorenchyma just below the epidermis alternates with collateral vascular bundles. The interior of the petiole is filled by aerenchyma with ample open spaces or lacunas. The lacunas are bridged at intervals by plates, or by diaphragm-like linkages. There are lactiferous ducts and groups of fibres throughout the entire length of the petiole, but more frequently in the chlorenchyma. Important taxonomic characteristics for the genus Echinodorus include the shape and outline of the petiole in transversal section, the presence of winged extensions, and the number of vascular bundle arcs. Exceptions occur in E. lanceolatus and E. paniculatus, whose petioles have similar anatomic patterns. A comparative chart of the petiole anatomic characteristics analyzed is presented.
URI: http://www.repositorio.ufc.br/handle/riufc/59067
ISSN: 0367-2530
Tipo de Acesso: Acesso Aberto
Aparece nas coleções:DBIO - Artigos publicados em revista científica

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