Sagittaria ambigua, the Kansas arrowhead, is an
aquatic plant species native to North America. It is a
perennial herb growing up to 90 centimetres (3 feet) tall. The
leaves are broadly lanceolate, the blade up to 20 cm (8 in) long and 12 cm (4+1⁄2 in) wide.[1][2][3][4]
^Smith, Jared Gage. 1894. North American Species of Sagittaria and Lophotocarpus 22–23, plate 17, Sagittaria ambigua
^Great Plains Flora Association. 1986. Flora of the Great Plains i–vii, 1–1392. University Press of Kansas, Lawrence, Sagittaria ambigua.
^Gleason, H. A. & A.J. Cronquist. 1968. The Pteridophytoa, Gymnospermae and Monocotyledoneae. 1: 1–482. In H. A. Gleason, New Britton and Brown Illustrated Flora of the Northeastern United States and Adjacent Canada, ed. 3, New York Botanical Garden, New York.