Watercress, also known as watercress, is also known as oriental grass, watercress, watercress, cold dish, lettuce tolerance, watercress, water spinach and so on.

It is a perennial aquatic herb in the genus watercress of Cruciferae, with a height of 20-40 cm, smooth and hairless, odd pinnate compound leaves, 3-9 small leaves, wide oval, oblong or nearly round, thin and flat petiole, ear-shaped petiole base, slightly holding the stem, terminal raceme, most flowers, long oval sepals, white petals, obovate or wide, and.