Potamogeton pectinatus), commonly called sago pondweed[1] or fennel pondweed, and sometimes called ribbon weed, is a cosmopolitan water plant species that grows in fresh and brackish water on all continents except Antarctica.

Stuckenia pectinata is a fully submerged aquatic plant and does not have any floating or emerged leaves.

[citation needed] Stuckenia pectinata has long narrow linear leaves which are less than 2 mm wide; each is composed of two slender, parallel tubes.

[4] The nutritious tubers are an important food source for waterfowl, including the canvasback, which help disperse the plant.

[5] The plant can become a nuisance weed in waterways such as canals, because it is tolerant to eutrophication.