Methodology of integral outphytosozological evaluation of rare dendroexotic plants

The urgency of scientific and legal aspects of phytodiversity protection, priority value of inventory researches are underlined. The history of becoming and aprobation techniques of integrated phytosozological estimation of rare plant species and phytocenosis is described. The concept about rare dendroexotic plants for which defind and for the improvement of their evaluation 15 outphytosozological characters are offered. For some dendroexotic plants outphytosozological classes and indexes are brought