Native to:
Afghanistan,
Alabama,
Albania,
Algeria,
Altay,
Arkansas,
Austria,
Baleares,
Baltic States,
Belarus,
Belgium,
Bulgaria,
Buryatiya,
Central European Russia,
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 Russia,
Northwest European Russia,
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