1、 Shape difference

Chelidonium Chelidonium is a perennial herb, about 30-60cm high, up to 100cm high. The taproot is thick, cylindrical, dark brown, the stem is umbrella shaped and has many branches. The former is short and erect, with many branches of about 20 cm, while the former is relatively small

2、 Blade difference

Chelidonium Chelidonium has few basal leaves, which are obovate oblong or wide obovate, pinnately divided, the lobes are obovate oblong, and the cauline leaves are similar to the basal leaves, which are relatively small. The Rhizoma Coptidis has pinnately compound leaves, the terminal leaves are lanceolate or oblong lanceolate, and the basal leaves are obovate or nearly circular

3、 Petal difference

Chelidonium Chelidonium is an umbrella, and its petals are obovate, and its color is yellow. The Rhizoma Coptidis is a cyme with 5-lobed corolla and oval lobes