Trillium undulatum is a species in the Trillium genus. This name is accepted name for the species in the family Melanthiaceae subfamily Parideae, . This species is found in Connecticut, Georgia, Kentucky, Maine, Maryland, Massachusetts, Michigan, New Brunswick, New Hampshire, New Jersey, New York, North Carolina, Nova Scotia, Ohio, Ontario, Pennsylvania, Prince Edward I., Québec, Rhode I., South Carolina, Tennessee, Vermont, Virginia, West Virginia .