1. Leaf characteristics: the leaves are triangular, oval or heart-shaped, and the veins are densely strigose. 2. Flower morphology: involucral bracts oblong-lanceolate, pubescent, corolla bell-shaped. 3. Fruit characteristics: Achenes are obovate, harden at maturity, and often have glandular spots. 4. Growth habit: Xanthium sibiricum likes soft soil, deep soil layer and rich water. The morphological characteristics of Xanthium sibiricum are 1 and leaf characteristics. The leaves of Xanthium sibiricum are triangular, ovoid or heart-shaped, 4-9 cm long and 5- 10 cm wide, nearly entire, with a sharp or blunt tip, a slightly heart-shaped or truncated base, irregular and rough serrations at the edge, and densely covered with strigose veins. The petiole is 3- 165438+. 2. Flower morphology: The male head of Xanthium sibiricum is spherical, with or without peduncle, the involucral bracts are oblong-lanceolate, pubescent, the receptacle is cylindrical, the corolla is bell-shaped, the female head is oval, and the inner involucral bracts are enclosed in a sac, and the color is green. 3. Fruit characteristics The achenes of Xanthium sibiricum become hard when they mature. With beak, the length is12-15 mm. There are sparse hooked thorns outside, the base is slightly thickened, the base is pilose, and there are often glandular spots. The beak is hard, conical in shape and achene obovate. 4. Growth habits Xanthium sibiricum is suitable for growing in places with soft soil, deep soil layer, sufficient water and rich organic matter, and the pH value is about 5.0. Wild Xanthium sibiricum is mainly distributed in plains, hills, low mountains, wilderness, roadsides and ditches.