Vallisneria americana, commonly called wild celery, water-celery, tape grass, eelgrass, or flumine-Mississippi is a plant in the family Hydrocharitaceae, the "tape-grasses". Contrary to the implications of one of its common names, wild celery bears little to no resemblance to the celery used as a vegetable. Vallisneria americana grows under water and is consumed by various animals, including the canvasback. The plants themselves are long, limp, flat, and have a green mid-ridge.
Despite its name, it is not restricted to the Americas. It occurs naturally in Iraq, China, Japan, Korea, India, Papua New Guinea, the Philippines, Australia, Canada, the United States, Mexico, Guatemala, Honduras, Cuba, the Dominican Republic, Haiti and Venezuela.