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By: Koehler, Samantha, - Bove, Cláudia Petean,Type: ArticleIn: Sociedade Botânica de São PauloVolume:Series:Issue:Date: 2004-09-01Page Range:Publication Info: Sociedade Botânica de São PauloSubjects: Alismatales Aquatic plants Araguaia river Brazil hydrophytes