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      Comparative leaf morphology and anatomy of three Asteraceae species

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          Abstract

          The objective of this paper was to describe and compare the morphology and anatomy of mature leaves of Mikania glomerata Spreng., Porophyllum ruderale Cass. and Vernonia condensata Baker (Asteraceae) species that have different habits emphasizing their secretory structures. Longitudinal and transversal sections of mature leaf blades of the three species were analyzed at the apex, base, and medium third part of the midvein of the leaf blade and of the margin. M. glomerata had uniseriate glandular trichomes and secretory ducts; P. ruderale had hydathodes and secretory cavities; and V. condensata had idioblasts and uni-and biseriate glandular trichomes.

          Translated abstract

          Este trabalho teve por objetivo descrever e comparar a morfo-anatomia das folhas adultas de Mikania glomerata Spreng., Porophyllum ruderale Cass. e Vernonia condensata Baker (Asteraceae), que possuem diferentes hábitos, enfatizando suas estruturas secretoras. Secções longitudinais e transversais dos limbos foliares foram analisadas nas regiões do ápice, da base e do terço médio na altura da nervura central, do limbo foliar e da margem. M. glomerata apresentou tricomas glandulares unisseriados e ductos secretores; P. ruderale tinha hidatódios e cavidades secretoras; e V. condensata apresentou idioblastos e tricomas glandulares uni- ou bisseriados.

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          Most cited references 20

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          Plant microtechnique

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            An integrated system of classification of flowering plant

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              Classification of the Architecture of Dicotyledonous Leaves

               Leo J. Hickey (1973)
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Journal
                babt
                Brazilian Archives of Biology and Technology
                Braz. arch. biol. technol.
                Instituto de Tecnologia do Paraná - Tecpar (Curitiba )
                1678-4324
                January 2006
                : 49
                : 1
                : 135-144
                Affiliations
                [1 ] Universidade de São Paulo Brazil
                Article
                S1516-89132006000100016
                10.1590/S1516-89132006000100016

                http://creativecommons.org/licenses/by/4.0/

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                Categories
                BIOLOGY

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