The book "Zeigerwerte von Pflanzen in Mitteleuropa" by Heinz Ellenberg, Heinrich E. Weber, Ruprecht Düll, Volkmar Wirth, and Willy Werner, third revised edition, provides an overview of ecological indicator values for vascular plants in Central Europe. The book includes an introduction to the third, improved, and expanded edition, explaining the basic principles of ecological evaluation of vascular plant groups. It covers topics such as light number (L), temperature number (T), continental number (K), moisture number (F), reaction number (R), nitrogen number (N), salt number (S), and resistance to heavy metals. It also discusses life forms and leaf duration, sociological behavior, frequency, and endangerment. The book addresses the validity areas and problems of ecological indicator values, their relationships to measured values, and the distribution of the seven factor numbers across scales. It also provides examples of applications and representations, including indicator value spectra, ecologicalograms with indicator values as coordinates, and mapping with average indicator values. The book includes an overview of indicator values, explanations of symbols, a tabular overview of vascular plant groups (excluding Rubus), a register of important synonyms, and a bibliography. The second part of the book focuses on indicator values of Rubus species. The book is a comprehensive resource for understanding the ecological characteristics of vascular plants in Central Europe.The book "Zeigerwerte von Pflanzen in Mitteleuropa" by Heinz Ellenberg, Heinrich E. Weber, Ruprecht Düll, Volkmar Wirth, and Willy Werner, third revised edition, provides an overview of ecological indicator values for vascular plants in Central Europe. The book includes an introduction to the third, improved, and expanded edition, explaining the basic principles of ecological evaluation of vascular plant groups. It covers topics such as light number (L), temperature number (T), continental number (K), moisture number (F), reaction number (R), nitrogen number (N), salt number (S), and resistance to heavy metals. It also discusses life forms and leaf duration, sociological behavior, frequency, and endangerment. The book addresses the validity areas and problems of ecological indicator values, their relationships to measured values, and the distribution of the seven factor numbers across scales. It also provides examples of applications and representations, including indicator value spectra, ecologicalograms with indicator values as coordinates, and mapping with average indicator values. The book includes an overview of indicator values, explanations of symbols, a tabular overview of vascular plant groups (excluding Rubus), a register of important synonyms, and a bibliography. The second part of the book focuses on indicator values of Rubus species. The book is a comprehensive resource for understanding the ecological characteristics of vascular plants in Central Europe.