Pharmacognosy delves into the significance of plants in modern pharmacy and medicine, highlighting their importance in complementary and alternative medicine. The fundamental principles of botany, morphology, and systematics are discussed, with a focus on the adulteration of crude drugs and the production of high-quality herbal medicines. The process of collection, drying, and storage of plant materials is outlined, followed by the standardization and quality control measures essential for ensuring the efficacy and safety of herbal drugs.