Paspalum repens, known as horsetail paspalum or water paspalum, is a species of grass native to South America, Central America, and North America.

[1][2][3] It is often called Paspalum fluitans,[2] though this name is treated as a synonym of P. repens in Kew's Plants of the World Online database and the Flora of North America project.

[3] It is an obligate wetland species, often found submersed or floating in shallow water bodies or on the edges of rivers.

It grows to be about a foot tall, with lance shaped leaves, spongy air-filled stems, and often a reddish tint.

[4][5] Paspalum repens has a medium protein content; it is highly palatable for both browsing and grazing animals[6] and is a favored food of Manatees.