Scientific name: Hippuris ssp

Mare’s tail is aquatic. When the water freezes and the plant is caught in the ice, that part of the plant dies, but it grows again the following spring from underground stems buried in the mud. The three species in Nunavut usually grow between 4 and 100 centimetres high, with H. vulgaris being much taller than H. lanceolata and H. tetraphylla (both grow to a maximum of 50 centimetres). The height attained varies depending on how deep the water is. It has a single stem, without any branches. The stems grow up above the water when the plant flowers. These stems are smooth, erect, and reddish. These plants also have rhizomes that grow roots in the soft ground in order to get nutrients.

The Inupiat and the Yupik of Alaska cook these plants in water with seal oil and blood to make a soup. source