Sagittaria

Sagittaria is a genus of about 30 species of aquatic plants whose members are referred to by the Native American word wapato () and a variety of other common names, including arrowhead, duck potato, swamp potato, tule potato, and katniss. Most are native to South, Central, and North America, but there are also some from Europe, Africa, and Asia.

== Description == Sagittaria plant stock (the perennial rhizome) is a horizontal creeper (stoloniferous). The leaf grows up to tall, with a shape resembling an arrowhead. Between July and September, a single stalk bears groups of three white flowers with three petals each. It is obliquely obovate, the margins winged, with an apical or ventral beak; in other words, they are a small, dry, one-seeded fruit that do not open to release the seed, set on a slant, narrower at the base, with winged edges, and having a "beaked" aperture (one side longer than the other) for sprouting, set above or below the fruit body.