Sagittaria cristata

Sagittaria cristata, the crested arrowhead, is a perennial herb growing up to 75 cm tall. The leaves are flat, long and narrow, not lobed, and up to 40 cm long. The flowers are white.

The species is native to Ontario and north-central United States (Illinois, Iowa, Minnesota, Missouri, Nebraska, Wisconsin, Michigan). It grows in shallow water along the edges of lakes, streams and marshes.