Cenopopulations of the rare Potentilla freyniana Bornm. (Rosaceae) species in meadow communities of the lower Ussuri valley

The paper presents data on new locations of the rare species Potentilla freyniana Bornm. (Rosaceae) of the meadow communities in the Ussuri River lower course valley. The author gives the characteristics of phytocenoses in the places of this species growth. It is provided the data on the number of individuals in coenopopulations, frequency of occurrence, age spectrum, vitality, as well as morphometric parameters of individuals to assess their condition. Some measures are proposed to protect the Potentilla freyniana species.