This document outlines the scope of pharmacognosy, which is defined as the scientific study of crude drugs from plant, animal, and mineral sources. Pharmacognosy has broad applications including isolation and analysis of phytochemicals, structure-activity relationship studies, development of drugs from natural products, use of natural products as models for new drugs, cultivation and processing of medicinal plants, and investigation of biosynthetic pathways. Pharmacognosy provides important links between pharmaceutical science and basic sciences as well as between modern and traditional medicine systems.