Native to:
Alaska,
Albania,
Aleutian Is.,
Algeria,
Argentina Northeast,
Argentina Northwest,
Argentina South,
Austria,
Azores,
Baltic States,
Belarus,
Belgium,
British Columbia,
Bulgaria,
Buryatiya,
California,
Central European Rus,
Chile Central,
Chile South,
Colorado,
Corse,
Czechoslovakia,
Denmark,
East Aegean Is.,
Falkland Is.,
Finland,
France,
Føroyar,
Germany,
Great Britain,
Greece,
Greenland,
Hungary,
Iceland,
Ireland,
Italy,
Kamchatka,
Khabarovsk,
Krasnoyarsk,
Kuril Is.,
Labrador,
Lebanon-Syria,
Madeira,
Magadan,
Manitoba,
Mongolia,
Morocco,
Netherlands,
Newfoundland,
North European Russi,
Northwest European R,
Northwest Territorie,
Norway,
Nunavut,
Ontario,
Oregon,
Poland,
Portugal,
Romania,
Sakhalin,
Sardegna,
Saskatchewan,
Sicilia,
Spain,
Sweden,
Switzerland,
Tunisia,
Turkey,
Turkey-in-Europe,
Ukraine,
Washington,
West Siberia,
Yakutskiya,
Yugoslavia,
Yukon