About 192 species of wild and cultivated medicinal plants are described. The following information is given about each of them: botanical characteristics, growing conditions and areas of distribution, recommendations on the technique of collecting, drying, packaging and storing raw materials, the quality of raw materials in accordance with the requirements of regulatory documents (standards, specifications, pharmacopoeia articles), the chemical composition of plants and their use in medicine and other areas of the national economy. Distinctive features of medicinal plants and similar species, permissible and unacceptable impurities in medicinal plant raw materials are indicated. The guide is designed for collectors and procurers of medicinal plant materials, botanical students, pharmacists, teachers and all those who are interested in medicinal plants.