Fourleaf Yam (Dioscorea quaternata)
Dioscorea Quaternata, or more commonly know as Fourleaf Yam, is a vine forb/herb of the genus Dioscorea. Its duration is perennial which means it will grow year after year. Dioscorea Quaternata or Fourleaf Yam's floral region is North America US Lower 48, specifically in the states of Alabama, Arkansas, Florida, Georgia, Iowa, Illinois, Indiana, Kentucky, Louisiana, Maryland, Minnesota, Missouri, Mississippi, North Carolina, Nebraska, New Jersey, Ohio, Oklahoma, Pennsylvania, Rhode Island, South Carolina, Tennessee, Texas, Virginia and Wisconsin.
