Synopsis Pharmacognosy defines as the study of the physical, chemical, biochemical and biological properties of drugs, drug substances or potential drugs or drug substances of natural origin as well as the search for new drugs form natural sources. In a restricted sense, the definition of Pharmacognosy implies a particular knowledge of methods of identification and evaluation of drugs. In a broad sense, Pharmacognosy embraces a knowledge of the history, distribution, cultivation, collection, selection, preparation, commerce, identification, evaluation, preservation and use of drugs and economic substances affecting the health of man and other animals. The book Laboratory manual of Pharmacognosy takes a deep look at the processes, practices and principles which lie behind Pharmacognosy, as well as the issues that le beneath the surface, including those of biodiversity loss, environmental degradation and depletion of natural resources resulting from the use of Pharmacognosy. The material of the book has been maintained easy to read, the better to foster comprehensive understanding of Pharmacognosy.