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Four selected species of family Polygonaceae Juss. viz. Persicaria salicifolia (Brouss. ex Willd.) Assenov, Persicaria senegalensis (Meisn.) Soják, Polygonum bellardii All. and Polygonum equisetiforme Sm. were subjected to botanical, chemical and numerical studies. The botanical part deals with macro- and micromorphological characters of the whole plant. The chemical part deals with extraction and identification of 17 compounds including flavones, flavonols, flavone C-glycosides and phenolic acids. The botanical and chemical results of the four selected species were subjected to a numerical analysis.
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Hussein et al. (2012) studied this question.
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