Morfoanatomia dos órgãos vegetativos de Piper crassinervium H.B. & K. (Piperaceae)
Data
2005-06-01
Autores
Albiero, Adriana Lenita Meyer [UNESP]
Paoli, Adelita Aparecida Sartori [UNESP]
Souza, Luiz Antonio de
Mourão, Káthia Socorro Mathias
Título da Revista
ISSN da Revista
Título de Volume
Editor
Sociedade Botânica do Brasil
Resumo
Objetivando auxiliar trabalhos taxonômicos e farmacobotânicos, foram realizados estudos morfoanatômicos dos órgãos vegetativos de Piper crassinervium H.B. & K. (jaborandi). O material foi analisado seguindo-se técnicas usuais de corte e coloração. P. crassinervium é um arbusto de caule ereto, de folhas estipuladas e alternas. Dentre as características anatômicas importantes para a sua identificação destacam-se: parênquima cortical radical com esclereídes; córtex caulinar com faixas descontínuas de colênquima e tecido vascular organizado em dois círculos descontínuos de feixes colaterais, delimitados por endoderme com estrias de Caspary; folha dorsiventral, hipoestomática, com estômatos ciclocíticos e tetracíticos e hipoderme unisseriada, porém, com 1-3 camadas de células na região da nervura principal; parênquima clorofiliano com idioblastos oleíferos; tricomas glandulares na epiderme unisseriada e idioblastos com pequenos cristais aciculares no parênquima em todos os órgãos.
The morphology and anatomy of the vegetative organs of Piper crassinervium H.B & K. (jaborandi) are here described with the purpose of contributing to taxonomical and pharmacobotanical studies. The material was analyzed according to usual techniques in these researches. The species is a shrub, with erect and cylindrical stem. The leaves are stipulate and alternate. The main characteristics that can be used in its identification are: cortical parenchyma of the root with sclereids, stem cortex with discontinuous strands of collenchyma, and vascular tissue constituted of two discontinuous circles of collateral vascular bundles; dorsiventral and hypostomatic leaves, with ciclocytic, and tetracytic stomata, and uniseriate hypodermis, but with 1-3 cells layers in midrib; chlorophilian parenchyma contains lipid idioblasts; glandular trichomes occur in uniseriate epidermis of the leaf and idioblasts with small acicular crystals occur in all organs.
The morphology and anatomy of the vegetative organs of Piper crassinervium H.B & K. (jaborandi) are here described with the purpose of contributing to taxonomical and pharmacobotanical studies. The material was analyzed according to usual techniques in these researches. The species is a shrub, with erect and cylindrical stem. The leaves are stipulate and alternate. The main characteristics that can be used in its identification are: cortical parenchyma of the root with sclereids, stem cortex with discontinuous strands of collenchyma, and vascular tissue constituted of two discontinuous circles of collateral vascular bundles; dorsiventral and hypostomatic leaves, with ciclocytic, and tetracytic stomata, and uniseriate hypodermis, but with 1-3 cells layers in midrib; chlorophilian parenchyma contains lipid idioblasts; glandular trichomes occur in uniseriate epidermis of the leaf and idioblasts with small acicular crystals occur in all organs.
Descrição
Palavras-chave
Piper crassinervium, morfologia, anatomia, raiz, caule, folha, Piper crassinervium, morphology, anatomy, root, stem, leaf
Como citar
Acta Botanica Brasilica. Sociedade Botânica do Brasil, v. 19, n. 2, p. 305-312, 2005.