The collective monograph gives a detailed description of the soils, habitat types, lichen flora, mossy, vascular plants and the main plant communities of the Upper Taz State Reserve (Western Siberia). Phytocenotic tables give specific descriptions of 311 growing communities. The ecological-phygocenotic groups of plants are allocated, allowing to establish the belonging of communities to certain syntaxons of ecological-phytocenotic classification. The morphology, ecology, dynamics and geography of selected associations and formations characterizing aquatic vegetation, meadows, swamps, shrubs and forests of the reserve are characterized. The succession dynamics of floodplain vegetation . is considered in detail Correspondence of selected syntaxes with units of ecological-floral classification of vegetation. The book is intended for geobotanists, ecologists, soil scientists, florists, geographers, conservation and forestry workers, students of biological, geographical and forestry faculties .