Types of drug plants

Types of drug plants

Drug plants can be arranged for study under following headings:-

i) Alphabetical: This arrangement using lation or vernacular names are employed for dictionaries etc.

ii) Taxonomy: On the basis of an accepted system of botanical classification, the drugs are arranged according to point from which the drugs are obtain- stem, leaves, fruits, flowers, seeds etc. and in classes, orders, families, genera and species.

iii) Morphological: This classification is based on the morphological structure from which the drugs are obtain, particularly stem, leaves, fruits, flowers, seeds etc.

iv) Pharmacological or Therapeutic: This classification involves the grouping of drugs according to the pharmacological actions of their most important constituent or therapeutic uses.v) Chemical or Biogenetic: The important constituent i.e alkaloids, glycosides, volatile oils etc or their biosynthesis pathway form the basis of classification.