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This paper deals with a anatomical study of the root, stem and leaf of Passiflora alata Dryander (Passifloraceae). This species is recognized in Rio Grande do Sul by its medicinal value, indicate as calmative and diuretic. The material analysed was collected in the Campus of UFSM, Santa Maria, RS. The study was realized using the usual technics of the vegetal histology. The anatomical pattem of the leaf, in cross-section, shows a dorsiventral and hypostomatic organization; absence of trichomes, anomocytic stornata; collateral bundle vascular. In cross-section, the young stem shows epidermis uniseriate; thick cuticle; total absence of trichomes; the bundles vascular are collateral. The primary root, in cross-section, is tetrach, the parenchyma cortical shows idioblastic cells, with tanniniferous contents.

Aspectos anatômicos dos órgãos vegetativos de Passiflora alata Dryander (Passifloraceae)