There are many disciplines associated with taxonomy which are used by
taxonomists as an aid or to improve the identification, classification
and to remove existing taxonomic confusions. Among these disciplines
palynology is one of the most significant tool used by modern
taxonomists to identify and differentiate closely related taxas. Pollen
characters have received great attention in taxonomic classification as
they show more stability in their characters than morphology. The
significance of pollen morphology in plant systematic has been stressed
by a number of workers to delineate different taxa in terms of
phylogenetic and taxonomic consideration. This monograph will shed some
light on pollen morphology of medicinally important herbal flora of
tropical and subtropical regions, and will be source of useful
information not only for taxonomist but also for the people related to
herbal pharmaceutical industries.