Touguxiang

Touguxiang

(Guiyang folk herbs)

[synonym] Tougu grass (Yunnan materia medica), manshanxiang (classified herbal medicine), coal seed, coal fruit (Guiyang folk herbs), Wanlixiang (Guangxi plant list), jiulixiang, yaoyaoye, Xiangcao, mantianxiang (Yunnan Chinese herbal medicine), Xiaokucao, touguxiao (Kunming folk herbs).

[source] the stem and leaf of Rhododendron yunnanensis.

[plant morphology] Yunnan white pearl tree, also known as Yunnan white pearl tree.

Shrubs, about 3 m high. The branches are long and thin, green or red. Single leaf alternate, leathery, ovate oblong, or broad ovate, 7-8 cm long, 2.5-3 cm wide, apex pointed caudate, base heart-shaped or round, leaf margin with obtuse teeth, slightly rolled outward, dark green above, glabrous, bluish white below, with fine pilose. Raceme or panicle axillary, 5-7 cm long; flowers bluish white, sepals 5, margin ciliate; corolla pot shaped, lobes 5; stamens 10; ovary superior, smooth glabrous. Capsule globose, about 6 mm in diameter, 5-lobed, with persistent style on top, with enlarged fleshy calyx on the outside, purple red at maturity, like berry. The seeds are light yellow and small. The flowering period is September.

It grows on the grass slopes and the edge of the jungle. It is distributed in Yunnan, Sichuan, Guizhou and Guangxi.

The root of this plant (Touguxiang root) is also used for medicine. Please refer to the special section for details.

[collection] harvest in summer and dry in the sun.

[medicinal material] the stem is about 35 cm long, multi branched, 3-5 mm in diameter, with yellowish brown surface, longitudinal striation and petiole scar. Most of the leaves fall off. Fresh, dry and green leaves are preferred.

Produced in Yunnan and Guizhou.

This product is used as Tougu grass in Yunnan and Guizhou. Please refer to "Tougu grass".

[chemical composition] the leaves contain 0.5-0.8% volatile oil. The main component is methyl salicylate.

[pharmacological action] oral administration of methyl salicylate has antipyretic, analgesic and anti rheumatic effects, which is similar to salicylic acid drugs and requires the same dose. However, due to the slow and irregular absorption of this product, it has a later effect. This product has strong irritation. It can be diluted with 1-2 parts olive oil for external use as an antistimulant. This product can also produce specific symptoms of salicylic acid poisoning, the toxic dose is about 2 / 3 of sodium salicylate.

[flavor] pungent, warm.

① "Diannan Materia Medica": "it is warm in nature, spicy in taste, and poisonous. "

② Guiyang folk herbs: "pungent, warm, non-toxic. "

③ Yunnan Chinese herbal medicine: "Xin, Ping. "

Functions and indications: dispelling wind and removing dampness, promoting blood circulation and dredging collaterals. Treatment of rheumatoid arthritis pain, water sprinkle, traumatic injury, toothache, eczema.

① "Diannan Materia Medica": "it is good for treating phlegm fire, muscle and bone pain and brewing wine. Its stem, wash wind cold dampness Bi, muscle and bone pain, warm bone diathermy, boil water wash. "

② "Guiyang folk herbs": "treatment of rheumatoid joint pain, traumatic injury. "

③ "Guangxi medicine plant directory": "Xingqi, detumescence, cough and phlegm. Treat toothache, strain, snake, rheumatism, Sha Qi, skin itching. "

④ Guizhou herbal medicine: "dispelling wind and removing dampness, relaxing tendons and promoting blood circulation. "

⑤ "Activating collaterals and penetrating bones" is a common folk herbal medicine in Kunming. "

[usage and dosage] oral administration: decoct soup, 3-5 yuan (1 liang fresh); or soak in wine. External use: wash with boiling water.

[selected formula] ① for rheumatic joint pain: Touguxiang for one or two. Take it in boiling water. (Guizhou herbal medicine)

② Treatment of eczema: Touguxiang whole plant decoction, wash the affected area. (Yunnan Chinese herbal medicine,)

⑧ Treatment of dropsy: Touguxiang five money, cheqiange three towns. Take it in boiling water. (Guizhou herbal medicine)

Chinese PinYin : Tou Gu Xiang