1, different explanations: Platycodon grandiflorum, alias Bao Hua, Bellflower and Mulberry Flower, is a perennial herb with a stem height of 20 ~ 120cm and no branches. Perilla frutescens is the dried stem of Labiatae, which contains volatile oil, mainly perillaldehyde and L- limonene.

2. There is milk in the plant of Platycodon grandiflorum, the whole plant is smooth and hairless, the root is thick and fleshy, conical or forked, the peel is yellow-brown, the stem of Perilla frutescens has a special fragrance, and the four edges of the stem are purple. Green or greenish purple, villous.