1 a - Polar tundras of the European part
1 b - Polar tundras of Siberia
1 с - Polar tndras of the Far East
1 d - Chukot tundras
2a - Northern European part
2b - Central European part
2c - Carpathian Mts.
2d - Southern European part
За - West Siberia
3b - Central Siberia
Зс - Sayan
3d - Altai
Зе - Transbaikalia
4 - Far East
5 - Amur region
6 - Ussuri region
7 - Sakhalin
8 - Caucasus and Transcaucasia
9 -Turan
10 - Tarbagatai and Saur
11 - Kopet-Dagh
12 -Tian-Shan
13 - Ghissar - Darvaz
14 - Pamirs- Alai