Department of Botany, Faculty of Science, University of Jaffna, Jaffna, Sri Lanka;
Department of Botany, Faculty of Science, University of Jaffna, Jaffna, Sri Lanka;
Department of Botany, Faculty of Science, University of Jaffna, Jaffna, Sri Lanka;
Department of Chemistry, Faculty of Science, University of Jaffna, Jaffna, Sri Lanka;