%0 Journal Article
%T Comparison of leaf morphology and anatomy among Malva sylvestris ("geranio-arom¨¢tico"), Pelargonium graveolens ("falsa-malva") and Pelargonium odoratissimum ("geranio-de-cheiro") Compara  o da Morfologia e da anatomia foliar entre as esp¨¦cies Malva sylvestris (geranio-arom¨¢tico), Pelargonium graveolens (falsa-malva) e Pelargonium odoratissimum (geranio-de-cheiro)
%A I. Romitelli
%A M.B.G. Martins
%J Revista Brasileira de Plantas Medicinais
%D 2013
%I UNESP
%X Malva sylvestris is generally confused with Pelargonium graveolens and Pelargonium odoratissimum due to similarities in their leaf morphology. The leaves of M. sylvestris have anthocyanins with scientifically proven cytotoxic, anti-inflammatory, antitumor and antioxidant properties. The leaves of P. odoratissimum have essential oil with antibacterial and spasmolytic properties, while the essential oil from P. graveolens has antimicrobial and antifungal activity. The aim of this study was to morpho-anatomically analyze the leaves of these species, indicating differences that can be used to clarify controversies about their use as medicinal plants. To anatomically compare the structure of each plant, samples were observed by Light Microscopy and Scanning Electron Microscopy (SEM). Leaf anatomy among species was quite different. Malva sylvestris showed capitate starry tector trichomes, as well as druses and mucilaginous cells. P. graveolens and P. odoratissimum differed as to trichomes. Both species had tector and glandular trichomes, and P. graveolens is distinguished for the greater height of tector trichomes and less quantity of the latter relative to P. odoratissimum. This study allowed the detection of anatomical differences, assisting in the taxonomy and classification of these species. Malva sylvestris ¨¦ comumente confundida com Pelargonium graveolens e Pelargonium odoratissimum devido ¨¤s semelhan as na morfologia foliar. As folhas de M. sylvestris possuem antocianinas com propriedades citot¨®xicas, antiinflamat¨®ria, antitumoral e antioxidante j¨¢ comprovadas cientificamente. As folhas de P. odoratissimum apresentam ¨®leo essencial com propriedades antibacteriana e espasmol¨ªtica, e o ¨®leo essencial da folha de P. graveolens possui atividade antimicrobiana e antif¨²ngica. O objetivo deste estudo foi analisar morfo-anatomicamente as folhas destas esp¨¦cies, apontando diferen as que possam ser utilizadas para esclarecer controv¨¦rsias na sua utiliza  o como planta medicinal. Com a finalidade de se comparar anatomicamente a estrutura de cada planta, as amostras foram observadas por Microscopia de Luz e Microscopia Eletr nica de Varredura (MEV). A anatomia foliar entre as esp¨¦cies foi bem distinta. Malva sylvestris apresentou tricomas do tipo capitado, estrelado e tector, al¨¦m de drusas e c¨¦lulas mucilaginosas. A distin  o entre P. graveolens e P. odoratissimum foi observada em rela  o aos tricomas. Ambas as esp¨¦cies apresentaram tricomas glandulares e tectores, sendo que P. graveolens se diferencia pela maior altura dos tricomas tectores e menor quantidade de
%K anatomia foliar
%K Malva sylvestris
%K Pelargonium graveolens
%K Pelargonium odoratissimum
%K plantas medicinais
%K leaf anatomy
%K Malva sylvestris
%K Pelargonium graveolens
%K Pelargonium odoratissimum
%K medicinal plants
%U http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-05722013000100013