Asia-Temperate China China North-Central China South-Central China Southeast Inner Mongolia Manchuria Tibet Eastern Asia Japan Korea Nansei-shoto Taiwan Russian Far East Khabarovsk Primorye Asia-Tropical Indian Subcontinent Assam East Himalaya Nepal Pakistan West Himalaya Indo-China Myanmar Vietnam Malesia Philippines Northern America Mexico Mexico Central Mexico Gulf Mexico Northeast Mexico Southwest Introduced into Asia-Temperate Middle Asia Turkmenistan Uzbekistan Europe Middle Europe Austria Czechoslovakia Northern America North-Central U.S.A. Illinois Northeastern U.S.A. Connecticut Masachusettes Michigan New Jersey New York Pennsylvania Rhode I. Vermont West Virginia Southeastern U.S.A. Alabama Arkansas Florida Georgia Kentucky Maryland North Carolina Tennessee Virginia Southwestern U.S.A. Utah

Asia-Temperate China China North-Central China South-Central China Southeast Inner Mongolia Manchuria Tibet Eastern Asia Japan Korea Nansei-shoto Taiwan Russian Far East Khabarovsk Primorye Asia-Tropical Indian Subcontinent Assam East Himalaya Nepal Pakistan West Himalaya Indo-China Myanmar Vietnam Malesia Philippines Northern America Mexico Mexico Central Mexico Gulf Mexico Northeast Mexico Southwest Introduced into Asia-Temperate Middle Asia Turkmenistan Uzbekistan Europe Middle Europe Austria Czechoslovakia Northern America North-Central U.S.A. Illinois Northeastern U.S.A. Connecticut Masachusettes Michigan New Jersey New York Pennsylvania Rhode I. Vermont West Virginia Southeastern U.S.A. Alabama Arkansas Florida Georgia Kentucky Maryland North Carolina Tennessee Virginia Southwestern U.S.A. Utah