1, Horse chestnut: Horse chestnut is Aristolochiaceae, Aristolochia perennial erect herbaceous plants, stems up to 100 centimeters high, rhizomes stout, leaf blade cordate, apical short acuminate, the base cordate, both surfaces and margins are pilose; petiole is hairy.

2, Aristolochia: Aristolochia, alias water horse fragrant fruit, snake ginseng fruit, triangular grass, autumn wood fragrant pot, the Chinese name because of its ripe fruit such as hanging under the horse's neck ringing bell and get. Aristolochia is a perennial twining herb.

3, Du Heng: Du Heng is a perennial herb of Aristolochiaceae, genus Hinoki; rhizome short, roots clustered, slightly fleshy, leaf blade broad cordate to kidney-shaped, apex obtuse or rounded, base cordate, leaf surface dark green, white cloud spots on both sides of the midvein, the back of the leaf light green.

4, golden earrings: golden earrings is Aristolochiaceae fine Xin genus of plants, alias: horseshoe fine Xin, a piece of tile, small plowshares, rhizome thick and short, root clusters, slightly fleshy, 2-3 mm in diameter, with a strong spicy flavor. Leaf blade long ovate, ovate or triangular-ovate, apex acute or acuminate, base auriculate-parted.

5, Hosane: Hosane is a perennial herb of Dicotyledonaceae, Aristolochiaceae, Hosane genus; rhizome erect or transverse, 2-3 mm in diameter, internodes 1-2 cm long, with multiple fibrous roots. Leaves usually 2, leaf blade cordate or ovate-cordate, apex acuminate or acute, base y cordate, tip rounded, leaf surface sparsely short hairs, denser on the veins.