The book "Plant teratology. A description of the main deviations from the normal structure of plants" by Maxwell T. Masters is a study of the phenomenon of anomalies in the structure of plants. In this book, the author examines in detail various deviations in the structure of plants, including deformations, mutations and other anomalies that can be observed in nature. Through richly illustrated material, the reader can study these phenomena in depth and understand their nature. The book is intended for specialists in the field of botany, students and anyone interested in natural science. "Plant teratology. Description of the main deviations from the normal structure of plants" is a valuable source of knowledge about the unique characteristics of the plant world and can serve as an important addition to the study of plant biology.