Shepherd's purse, a perennial herb, has slightly round leaves, floats on the water, roots in the water, yellow flowers and oval capsules. The roots are edible, and the whole grass can be used as medicine, feed or fertilizer.

Water chestnut leaves (water chestnut; Also refers to the name of coins cast in the Southern and Northern Dynasties and the Song Dynasty); Water chestnut belt (water chestnut is like a belt in water); Porphyra (Porphyra leaf); Water chestnut flower (water chestnut flower)

You in the Book of Songs

Xing: The first "Guan Ju" in The Book of Songs is the scene of field work when it was written. "shepherd's purse is not neat, and it flows around. My fair lady, ask for more happiness. " You see, this beautiful girl who has been sung through the ages used to pick wild vegetables in the wild. As for water chestnut, the original text explains a kind of herb, which is aquatic, with leaves floating on the water and edible.

Shepherd's purse, a perennial herb, has slightly round leaves, floats on the water, roots in the water, yellow flowers and oval capsules. Roots, stems, leaves and flowers are all edible, in which water chestnut leaves and water chestnut algae refer to water chestnut; Water chestnut belt refers to the banded root of water chestnut; Water chestnut flower refers to the flower of water chestnut. The whole herb of shepherd's purse can also be used as medicine. It is also used as green feed or fertilizer in the south.