Thalictrum petalosum

Thalictrum petalosum

(Hebei Traditional Chinese medicine manual)

[synonym] Thalictrum floribundum, Coptis equisetifolia and Thalictrum nephrophyllum (Hebei Traditional Chinese medicine manual).

[source] it is the root of tangsongcao, a Ranunculaceae plant.

[plant morphology] tangsongcao

Herbs perennial, glabrous. Stem 20-50 cm high, branched. Leaflets obovate, suborbicular or rhombic, 3-12 mm long, 2-25 mm wide, 3-lobed to 3-lobed, lobes ovate or obovate, entire, veins flat or slightly raised, green above, pink white below, short stalked. The inflorescence is corymbose; pedicel 0.5-2.8 cm long; flower diameter 1-2 cm; sepals 4, white, ovate, 3-5 mm long, caducous; without petals; stamens many, 5-12 mm long, filaments oblanceolate, wider than anther; carpel 4-13, style short, stigma narrowly elliptic. Achene ovate, 4-6 mm long, longitudinal rib distinct, persistent style straight, about 1 mm long.

It is distributed in Sichuan, Qinghai, Gansu, Shaanxi, Henan, Anhui, Shanxi, Hebei, Inner Mongolia and Northeast China.

[collection] in autumn, the soil should be removed and used fresh or dried.

[chemical constituents] the root contains a small amount of berberine.

[nature and taste] Hebei Traditional Chinese Medicine Manual: "cold in nature, bitter in taste. "

[function indications] clearing away heat and toxin. Treatment of red and white dysentery, carbuncle, sores, immersion sores.

① Hebei Handbook of traditional Chinese medicine: "treating exudative dermatitis. "

② "Ningxia Chinese herbal medicine manual": "clearing heat and detoxifying. "

[usage and dosage] oral administration: decoction, 1-3 yuan. External use: grind the end to scatter or adjust to apply.

[prescription selection] ① for red and white dysentery: three bucks for Coptis and five bucks for purslane. Take it in water. (Ningxia Chinese herbal medicine manual)

② Cure carbuncle swollen sore: horsetail Coptis three money, dandelion one or two. Take it in water. (Ningxia Chinese herbal medicine manual)

③ Treatment of exudative dermatitis (immersion sores): dried Thalictrum petalosum powder, take the right amount, spread the affected area; or with pine pollen each equally used. If the patient is in the dry crack after spreading, you can apply sesame oil. (Hebei Traditional Chinese medicine manual)