Elodea canadensis (Canadian Waterweed)

also known as: Canadian Waterweed, Canadian Pondweed, American Waterweed, Choke Pondweed, Ditch Moss, Little Snakeweed, Water Thyme, Anacharis canadensis, Anacharis canadensis var. planchonii, Elodea brandegeeae, Elodea ioensis, Elodea linearis, Elodea planchonii, Philotria canadensis, Philotria linearis