Native to:
Afghanistan,
Alabama,
Albania,
Algeria,
Altay,
Arkansas,
Austria,
Baleares,
Baltic States,
Belarus,
Belgium,
Bulgaria,
Buryatiya,
Central European Rus,
China North-Central,
China South-Central,
China Southeast,
Chita,
Connecticut,
Corse,
Cyprus,
Czechoslovakia,
Denmark,
East European Russia,
Finland,
France,
Georgia,
Germany,
Great Britain,
Greece,
Hungary,
Illinois,
Indiana,
Inner Mongolia,
Iran,
Ireland,
Irkutsk,
Italy,
Japan,
Kazakhstan,
Kentucky,
Khabarovsk,
Kirgizstan,
Korea,
Krasnoyarsk,
Kriti,
Krym,
Lebanon-Syria,
Manchuria,
Maryland,
Massachusetts,
Michigan,
Missouri,
Mongolia,
Morocco,
Nepal,
Netherlands,
New Brunswick,
New Jersey,
New York,
North Carolina,
North Caucasus,
North European Russi,
Northwest European R,
Norway,
Ohio,
Ontario,
Pakistan,
Pennsylvania,
Poland,
Portugal,
Primorye,
Québec,
Rhode I.,
Romania,
Sakhalin,
Sardegna,
Sicilia,
Spain,
Sweden,
Switzerland,
Tadzhikistan,
Taiwan,
Tennessee,
Tibet,
Transcaucasus,
Turkey,
Turkey-in-Europe,
Tuva,
Ukraine,
Uzbekistan,
Vermont,
Virginia,
West Himalaya,
West Virginia,
Xinjiang,
Yakutskiya,
Yugoslavia