- Continental: Europe (introduced))
- Regional: Middle Europe
- Regional: Southeastern Europe
- Continental: Asia-Temperate (introduced)
- Regional: Siberia
- Regional: Eastern Asia
- Continental: Northern America
- Regional: Western Canada
- British Columbia, Manitoba, Saskatchewan.
- Regional: Eastern Canada
- New Brunswick, Newfoundland, Nova Scotia, Ontario, Prince Edward Island, Québec.
- Regional: Northwestern U.S.A.
- Regional: North-Central U.S.A.
- Illinois, Iowa, Kansas, Minnesota, Missouri, North Dakota, Nebraska, Oklahoma, South Dakota, Wisconsin.
- Regional: Northeastern U.S.A.
- Connecticut, Indiana, Maine, Massachusetts, Michigan, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, West Virginia.
- Regional: Southwestern U.S.A.
- Regional: South-Central U.S.A.
- Regional: Southeastern U.S.A.
- Alabama, Arkansas, Delaware, Florida, Georgia, Kentucky, Louisiana, Maryland, Mississippi, North Carolina, South Carolina, Tennessee, Virginia, District of Columbia.
- Regional: Mexico
- Mexico Northeast, Mexico Gulf.
References:Brummitt, R.K. 2001. TDWG – World Geographical Scheme for Recording Plant Distributions, 2nd Edition |