The selection of plants studied in this treatise is based on its significance,
and its representation of members of different taxonomic families as well as of
different classes (and subclasses) of compounds. All the available data on the
chemical compounds and the pharmacological studies on these plants/compounds
have been incorporated. The plants are arranged by the type and nature of
chemical compounds they contain. Secondary metabolites have been included in
this volume due to their great therapeutic role.