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Africa Northern Africa Algeria Morocco Tunisia Asia-Temperate Caucasus North Caucasus Transcaucasus China Tibet Xinjiang Middle Asia Kazakhstan Kirgizistan Tadzhikistan Turkmenistan Uzbekistan Western Asia Afghanistan Cyprus East Aegean Is. Iran Iraq Lebanon-Syria Palestine Turkey Asia-Tropical Indian Subcontinent Nepal Pakistan West Himalaya Indo-China Myanmar Europe Eastern Europe Baltic States Belarus Central European Russia East European Russia Krym North European Russia Northwest European Russia South European Russia Ukraine Middle Europe Austria Belgium Czechoslovakia Germany Hungary Netherlands Poland Switzerland Northern Europe Denmark Finland Great Britain Ireland Norway Sweden Southeastern Europe Albania Bulgaria Greece Italy Romania Sicilia Turkey-in-Europe Yugoslavia Southwestern Europe Corse France Portugal Spain Introduced into Asia-Temperate Eastern Asia Korea Russian Far East Primorye Australasia New Zealand New Zealand South Northern America Eastern Canada Newfoundland Ontario North-Central U.S.A. Illinois Iowa Kansas Minnesota Missouri Nebraska Oklahoma South Dakota Wisconsin Northeastern U.S.A. Connecticut Indiana Maine Masachusettes Michigan New Hampshire New Jersey New York Ohio Pennsylvania Rhode I. Vermont West Virginia Northwestern U.S.A. Colorado Idaho Montana Oregon Washington Wyoming Southeastern U.S.A. Alabama Delaware District of Columbia Kentucky Maryland North Carolina Tennessee Virginia Southwestern U.S.A. Utah Western Canada British Columbia Southern America Southern South America Argentina South