XVI International Botanical Congess
The chromosome number for the 900 species belongs to 248 generas and 48 families of the Tajikistan florae are were established. The chromosome number furst for the 400 species and 10 genera are given, and for the other species a confirmation already known dates. A most fully to study of families Compositae, Cruciferae, Chenopodiaceae, Labiatae and Zygophyllaceae are species. Among them that the 112 is species be endemic of the Tajikistan florae.