Native to:
China North-Central,
China South-Central,
Tibet
Introduced into:
Afghanistan,
Albania,
Alberta,
Altay,
Amur,
Baltic States,
Bangladesh,
Belgium,
Buryatiya,
Central European Russia,
China Southeast,
Chita,
Czechia-Slovakia,
Denmark,
East European Russia,
East Himalaya,
Finland,
France,
Germany,
Great Britain,
Inner Mongolia,
Ireland,
Irkutsk,
Japan,
Kamchatka,
Kazakhstan,
Khabarovsk,
Kirgizstan,
Krasnoyarsk,
Magadan,
Maine,
Manchuria,
Massachusetts,
Michigan,
Mongolia,
Myanmar,
Nepal,
Netherlands,
New Brunswick,
New Hampshire,
New York,
Newfoundland,
North Caucasus,
North European Russia,
Northwest European Russia,
Norway,
Nova Scotia,
NW. Balkan Pen.,
Ontario,
Pakistan,
Pennsylvania,
Poland,
Primorye,
Qinghai,
Québec,
Rhode I.,
Romania,
Sakhalin,
Saskatchewan,
South European Russia,
Sweden,
Tadzhikistan,
Transcaucasus,
Tuva,
Ukraine,
Vermont,
West Himalaya,
West Siberia,
West Virginia,
Xinjiang,
Yakutiya