1, Fangji: perennial woody vine, 3-4 meters long; Roots are thick and cylindrical, stems are slender, cork is developed, and the length is more than 15 cm.

2, Aristolochia: Aristolochia of Aristolochiaceae is a perennial twining herb with cylindrical roots. The stems are weak and hairless, the leaves are alternate, the capsule is nearly spherical, and the apex is round and slightly concave. Contains aristolochic acid, magnolin, tetrandrine and other ingredients.

3. Aristolochia mollissima: A woody vine belonging to Aristolochia of Aristolochiaceae. Its roots contain allantoin, aristolactone, mollislactone, β-sitosterol and other components.

Extended data:

Effects of aristolochic acid:

1, fresh Aristolochia fruits and leaves have inhibitory effect on Staphylococcus aureus in vitro, and the effect of fruits is better than that of Ye Qiang, which is still effective after tannin removal, but the antibacterial effect is reduced or lost after heating, and has no effect on Pseudomonas aeruginosa.

2. Aristolochia has a mild and lasting antihypertensive effect.

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