Langyin

Langyin

(Jiangxi herbal medicine manual)

[synonym] red fire crow sour grass, snake not drill, cat thorn (Jiangxi herbal medicine manual), South snake grass (Gansu herbal medicine manual).

[source] it is the whole plant of Polygonum spinosum.

[plant morphology] Polygonum spinosum

Perennial herbs. Stem spreading or ascending, 1-3 m long, tetragonal, with inverted barbs. The leaf blade is triangular or triangular Gan shaped, 4-8 cm long and 3-7 cm wide, apex acuminate or narrowly pointed, base cordate, usually glabrous or with sparse fine hairs on both sides, with inverted barbs along the vein below; the stipule sheath is short tubular, membranous, upper herbaceous, green. Inflorescence terminal or axillary; pedicel glandular and pubescent, sparsely uncinate; flowers reddish; perianth 5-lobed, lobes oblong; stamens 8; style 3, lower part connate, stigma capitate. Achenes subglobose, black, shiny.

It grows on the side of ditch, roadside and under the bush of valley. Distributed in Liaoning, Gansu, Hebei, Shandong, Jiangxi, Zhejiang, Fujian and other places.

[collection] harvest in summer and autumn.

[chemical constituents] the content of Isoquercitrin is about 0.07%.

[nature and taste] 1. Jiangxi herbal medicine manual: "bitter, flat. "

② "Gansu Handbook of Chinese herbal medicine": "sour, slightly pungent, flat. "

[functions and indications] ① Jiangxi herbal medicine manual: "promoting blood circulation, dispersing blood stasis, detumescence and detoxification. Treatment of snakehead, stubborn carbuncle, fetal poison, snake bite, fall, eczema, itching, external hemorrhoids, internal hemorrhoids. "

② "Gansu Chinese herbal medicine manual": "heat clearing and detoxification, regulating qi and relieving pain, solid off, treatment of infantile fetal toxicity, stomach pain, uterine prolapse. "

[usage and dosage] oral administration: Jiantang, 1-2 Liang; Yanmo, 0.5-1 Qian. External use: tamping, frying, washing or grinding.

[selection] 1. Treatment of ear canal inflammation: fresh Lanyin was mashed and the juice was dripped. (selected materials of new TCM therapies in Fujian Province)

② Treatment of eczema, paint allergy, foot itching and infection: two liang each time for oral use, two Jin each time for external washing of decocted soup, or external application of mashed juice. (selected materials of new TCM therapies in Fujian Province)

Chinese PinYin : Lang Yin