This study aimed to establish parameters for morphoanatomical analysis of the aerial parts (stem and leaves) of the plant Wedelia paludosa DC., Asteraceae. The drug and its respective powder were characterized by macro and microscopic analysis after obtaining semi-permanent lamina of transverse and paradermal sections. The powder was analyzed after being cleared with chloral hydrate. It is an herbaceous plant with reddish-brown stems, opposite leaves, short-petiolated and membranous, with hair on both faces, narrowed towards the base up the middle provided with two small lateral lobes and a, large and jagged terminal. The plant has circular cross-section of stem, in which the primary growth, has epidermis, angular collenchyma, cortical parenchyma and vascular cylinder, as well as calcium oxalate (several clusters and some prismatic crystals). The leaf is simple, containing trichomes and stomata. The mesophyll has dorsiventral organization and the midrib, in cross section presents concave-convex face with three bundles and presence of calcium oxalate in parenchymal cells. In the powder was found the same structures observed in microscopic drug erased. The morphoanatomical parameters established in this work allow the macro and microscopic quality control of power and sectioned drug.
Acmela brasiliensis; quality control; medicinal plant; Sphagneticola trilobata; Wedelia paludosa; Asteraceae
