Epilobium coloratum, known by the common names purpleleaf willowherb and cinnamon willow-herb, is a species of flowering plant in the willowherb family Onagraceae. This species is native to the Midwest and Eastern United States (excluding the U.S. states of Mississippi and Florida), as well as the Canadian provinces of Ontario, Quebec, New Brunswick, Nova Scotia, and the island of Newfoundland.