The book contains papers representing different trends of hydrobotany — a branch of science dealing with overgrowing processes in water bodies and water courses. The beginning of the book is devoted to leading Russian hydrobotanist, doctor of biological sciences, professor V.G. Papchenkov, his career and student memories about him. Other research papers cover different aspects of hydrobotany: floristic, geobotanical, productional, ecological, biomorphological etc. The book is concluded with a full list of publications of V.G. Papchenkov. This book is for hydrobotanists, hydrobiologists, ecologists, taxonomists, geobotanists, specialists in the sphere of nature management and protection of natural resources, students of biological and ecological faculties.