1、 Blade difference

The stem and leaf sheath of the mustard will be expanded, and the stem and leaf sheath will be about 13-36 cm long. The leaves are triangular to oval, hard paper. The basal leaves of Peucedanum have petioles, about 5-15 cm long, and the stem leaves have no petioles. The leaf blade is broadly ovate or triangular ovate in outline

2、 The difference between flowers

The purple flower Peucedanum is a compound cyme, lateral and terminal. There are 1-3 involucral bracts, which are oval and purple in color. The petals are obovate and oval lanceolate, and the flowers are dark purple in color. The flowering period is from August to September. The involucral bracts of Peucedanum are linear, the petals are oval, and the color of the flowers is white. Florescence is similar to the former