Datura. Also known as Datura. Manda, Manza, Manda, Zuihua, Walnut, Datura. , Saussurea involucrata, Marigold, Ranunculus, Saussurea involucrata. Herbs or semi-shrubs, 0.5~ 1.5 m high, nearly smooth or pubescent in all young parts. The stems are stout, cylindrical, light green or purplish, and the lower part is lignified. Ye Guang is oval. Flowers solitary in branches or leaf axils, erect and short peduncle; Calyx tubular. The capsule is erect, with hard needles or sometimes no needles on the egg-shaped surface, nearly smooth, pale yellow after maturity, and regular 4 petals. Seeds ovoid, slightly oblate and black. The flowering period is from June to 65438+10, and the fruiting period is from July to165438+10. Often born in wasteland, dry land, beside houses, sunny slopes, forest edges and grasslands. I like warm, sunny and well-drained sandy loam. Planting for medicinal or ornamental purposes.