Morphological characteristics of duck flowers: annual to perennial herbs, few shrubs (in tropical and subtropical areas) Roots are usually true roots with thick meat, sometimes conical or branched from the root neck, and a few roots are bunchy, cylindrical or rod-shaped. Stems erect or prostrate, usually round, slightly ribbed and grooved, or obtuse, hollow or pithy. Leaves alternate, leaves are usually lobed or multi-lobed, compound leaves have palmate lobes 1 or pinnate lobes 1-4, or pinnate lobes 1-2, and few leaves are simple; Petiole has a leaf sheath at the base, usually without stipules, sparsely membranous.
Perennial herbs. The stem is 30-90 cm high and bifurcated. The leaves are broadly ovoid, 5-18cm long and 3-lobed, the middle lobule is rhombic obovate, 3-10cm long and 2.5-7cm wide, the top is short, the base is wedge-shaped, the lobules on both sides are obliquely obovate, the lobule edges are serrated or sometimes 2-3-lobed, and the petiole is 5- 17 long. The upper leaves of the stem are sessile and the leaflets are lanceolate. There are 2-3 rays with different lengths, 8-20 mm long, usually close to each other, and the whole inflorescence is conical; There are 1 ~ 3 linear, caducous bracts and bracteoles in involucre and bracteole respectively. Umbellies have 2 to 4 flowers, and the flowers are white. The fruit is linear and rectangular, with flat and smooth sides and thin and round fruit edges. The flowering period is April-May.
Born in forests, ditches, wetlands near fields or grasslands in valleys in low mountains. Yangmingshan, Xitou, Alishan, Taiping Mountain and Batongguan Ancient Road are quite common. Some areas are planted as vegetables.