Prospects of further introduction of woody plants of the Red Data Book of Russia to Saint-Petersburg

Fifty woody species of the Red Data Book of Russian Federation are represented in botanic gardens of Saint-Petersburg. The rest 53 species belong to 40 genera of 23 families. Eight species of the first category, which are under extinction in the wild, are the most important for introduction and Ex situ conservation. The most part of absent species come from the European part of Russia, the best reserves are among the dwarf subshrubs. Fourteen species are recommended for primary introduction, and 10 species are recommended for repeated introduction.