Mentha × cardiaca (Gray) Bak.

Medicinal parts:flowering plants

Native to:Corse, France, Great Britain, Italy

Extinct in:Belgium

Introduced into:Alberta, Arkansas, Austria, British Columbia, Central European Rus, Connecticut, Czechoslovakia, Delaware, Denmark, District of Columbia, Finland, Germany, Hungary, Illinois, Indiana, Iowa, Ireland, Kansas, Kentucky, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, Nebraska, Netherlands, New Brunswick, New Hampshire, New Jersey, New York, Newfoundland, North Carolina, Norway, Nova Scotia, Ohio, Ontario, Pennsylvania, Poland, Portugal, Prince Edward I., Québec, Rhode I., Romania, South Carolina, Spain, Sweden, Switzerland, Ukraine, Vermont, Virginia, West Siberia, West Virginia, Wisconsin, Yugoslavia

Homotypic Synonyms:Mentha arvensis var. gracilis (Sole) Nyman ;Mentha gentilis var. gracilis (Sole) Wahlenb. 

Original plants and herbarium: