Please answer the following question: Potamogeton nodosus - Potamogeton nodosus is a species of aquatic plant known by the common name longleaf pondweed. It is native to Eurasia and the Americas where it is widespread and can be found in water bodies such as ponds lakes ditches and streams. This is a perennial herb producing a thin branching stem easily exceeding a meter in maximum length. The leaves are linear to widely lance-shaped and up to 15 centimeters long by 4 wide. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
A:
Plant