1、 Blade difference

Thistle poppy has cauline leaves and basal leaves. The basal leaves are wide oblanceolate, oval or obovate, about 5-20 cm long and 2.5-7.5 cm wide. The apex is acute, the base is wedge-shaped, the edge is pinnate and deeply divided, the lobes have wavy teeth, and the tooth ends have spikes. The shape of the stem is the same as that of the base, and the upper part is smaller

The leaves of wild poppy are all basal, oval to lanceolate in outline, about 3-8 cm long, the apex is acute or round, the base expands into a sheath, the edge is pinnate, deeply divided or completely divided, and the lobes are entire

2、 Petal difference

Thistle poppy flowers usually grow only at the top of short branches, but also a few are cymes, with 6 petals, in a wide obovate shape, and the color is yellow or orange yellow

The scape of wild poppy is cylindrical, the flowers are solitary on the scape, and the four petals are wide wedge-shaped or obovate. The color is similar to the former, yellow, light yellow or orange yellow, and also red