Pharmacognostical Study of Some Plants Belonging to Compositae Family

Some plants blonging to copositae family.Asteriscus graveolens Less. Is a wild perennial herb growing in Egypt .The plant was collected from Sinai desert. The extract of the plant was chromatographed over Si gel column .Accordingly , it was deemed of interest to investigate the plant phytochemically with a view to isolate , characterize and identify its chemical constituents whenever possible . Moreover , the macro-and micro-morphology of the plant was studied in order to identify it in the entire and powdered forms .This thesis include two parts :Part I : Botanical study :A - Morphological characters .B - Microscopical characters .Part II : Phytochemical study .The study has been done to elucidate the characteristics of the plant , in order to identify the plant to investigate its active constituents .This study included a preliminary phytochemical screening of the herb and roots followed by the isolation and characterization of the different classes of compounds present .