| Northern Europe | Denmark, Finland, Great Britain, Iceland, Norway, Sweden |
| Middle Europe | Austria, Belgium, Czechoslovakia, Germany, Hungary, Netherlands, Poland, Switzerland |
| Southwestern Europe | France, Spain |
| Southeastern Europe | Bulgaria, Greece, Italy, Romania, Yugoslavia |
| Eastern Europe | Belarus, Baltic States, Krym, Central European Russia, East European Russia, North European Russia, Northwest European Russia, Ukraine |
| Siberia | Altay, Buryatiya, Chita, Irkutsk, Krasnoyarsk, Tuva, West Siberia, Yakutiya |
| Russian Far East | Amur, Kamchatka, Khabarovsk, Kuril Is., Magadan |
| Middle Asia | Kazakhstan, Kirgizstan |
| Caucasus | North Caucasus, Transcaucasus |
| Western Asia | Turkey |
| China | China South-Central, Inner Mongolia, Manchuria, China North-Central, Qinghai, Tibet |
| Mongolia | Mongolia |
| Eastern Asia | Korea |
| Indian Subcontinent | Nepal, Pakistan, West Himalaya |
| Subarctic America | Alaska, Greenland, Nunavut, Northwest Territories, Yukon |
| Western Canada | Alberta, British Columbia, Manitoba, Saskatchewan |
| Eastern Canada | Labrador, New Brunswick, Newfoundland, Nova Scotia, Ontario, Prince Edward I., Québec |
| Northwestern U.S.A. | Colorado, Idaho, Montana, Oregon, Washington, Wyoming |
| North-Central U.S.A. | Illinois, Minnesota, South Dakota, Wisconsin |
| Northeastern U.S.A. | Connecticut, Indiana, Maine, Massachusetts, Michigan, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, West Virginia |
| Southwestern U.S.A. | California, Utah |
| South-Central U.S.A. | New Mexico |
| Southeastern U.S.A. | Delaware, Maryland, District of Columbia |