The Chinese arrowhead (scientific name: Sagittaria trifolia L. var. sinensis (Sims.) Makino) is a perennial herb of the Alismataceae family, growing in paddy fields. Its leaves resemble arrows and produce white flowers. Underground, it has corms that are yellowish-white or bluish-white, which are used as vegetables. They are edible and also known as "Zigou." This variety differs from the original in that the plants are tall and robust, with large, thick leaves, the top lobe being obtuse and rounded, ovate to broadly ovate. The creeping stem ends in an enlarged corm, which is oval or spherical, reaching 5-8×4-6 centimeters. The panicle is tall, 20-60 centimeters long, occasionally over 80 centimeters, with 1-2 whorls of female flowers at the base, the main axis having 3-4 whorls of female flowers above the lateral branches; male flowers in multiple whorls, located at the top, forming a large panicle, often lying obliquely in the water during fruiting; the receptacle of the fruiting flower is flat-spherical, 4-5 millimeters in diameter, about 3 millimeters high. The seeds are brown with small protuberances.

Broadly cultivated in the provinces south of the Yangtze River in China. Also grown in Japan and Korea. The bulbs can be eaten as vegetables and for other uses.