Sonchus sonchifolia (Compositae) alias: Ixeris sonchifolia, Quma, Qunmen, Ixeris sonchifolia, Ixeris sonchifolia, Ixeris sonchifolia, Ixeris sonchifolia, Ixeris sonchifolia. Plant height is 60-90 cm, erect, with horizontal roots, and the whole grass has white milk. Root leaves are large, tufted and short-stalked; Stem and leaf alternate, sessile; The leaves are long and round-lanceolate, with sparse notches or shallow feathers, and the base gradually narrows into stalks; The head-shaped flowers are terminal and umbrella-shaped, all tongue-shaped flowers, yellow, and the style is beyond; Involucre bell-shaped, bracts ovate-triangular. Achenes are ovoid, with narrow edges and longitudinal stripes. Born in fields and roadsides, wheat, rape and other dry farmland are common, and sometimes a large number of them enter alkaline degraded grassland.