floristic subdivision

FLORISTIC RICHNESS OF PHYSICAL-GEOGRAPHICAL AREAS AND A FLORISTIC SUBDIVISION SCHEME OF THE MIDDLE-VOLGA REGION

A scheme of floristic division of the Middle-Volga region has been compiled for the first time on the basis of available material and our analysis of the distribution of plants over the physical-geographical regions of the Middle Volga and identification of their floristic similarity. A brief description of each floristic region is given. The species of vascular plants determining the specificity of these regions are listed.