Buckwheat seven

Buckwheat seven

(records of Shaanxi traditional Chinese Medicine)

[synonym] baiyaozi, shitianqiao (Shaanxi Chinese herbal medicine), hongyaozi (Henan Chinese herbal medicine manual).

[source] it is the tuberous root of Polygonum pterygium.

[plant morphology] Polygonum pterygium

Perennial woody vines. The stem is several meters long, and the lower part is segmented. Light purplish red, upper part not segmented, green. Leaves alternate, heart-shaped triangular, or heart-shaped ovate, 4-8 cm long, 3-5 cm wide, apex caudal, base concave, both sides of the foot is ear shaped or round, entire, slightly hairy veins; petiole 3-8 cm long, red; with stipule sheath. Raceme axillary, flowers are simple; calyx yellowish green, ovoid, ca. 3 mm long, ca. 1.5 mm wide; stamens 8; ovary superior, stigma 3 forked. The fruit is triangular, 3-winged at the top, 3-horned at the base, 2-winged at the peduncle, with lanceolate membranous bracts below. The flowering period is summer and autumn.

It is wild under high mountains and dense forests or in grass on hillsides. It is distributed in Northwest China.

[collection] harvest in autumn, dig out, remove the stems, leaves and fibrous roots, clean the soil, slice and dry.

[herbal medicine] the root tubers are fleshy, irregular and of different sizes. The smaller ones are like fists, and the larger ones can be up to 30 cm in diameter. The outer skin is brown or dark brown, surrounded by dense fibrous roots. Most of the products are cut into thick pieces, about 0.6-0.9 cm thick and 2-6 cm in diameter. The cross section is not flat, pink or pink white, with powdery. It is light, brittle and easy to break. Odorless, bitter and astringent.

Produced in Shaanxi.

[taste] bitter and sour, cold.

① Shaanxi Chinese herbal medicine: "bitter and astringent, slightly sweet, cool in nature. "

② "Henan Manual of Chinese herbal medicine": "cold in nature, sour and bitter in taste. "

Functions and indications: cooling blood and removing blood stasis, removing dampness and detoxification. It can treat hematemesis, hematemesis, hematochezia, dysentery, metrorrhagia, rheumatism, arthralgia, sores, burns.

① "Stop bleeding and cool blood" in Shaanxi traditional Chinese medicine annals. For hematemesis, bleeding, red and white dysentery, collapse zone, rheumatism and cold arthralgia. "

② Shaanxi Chinese herbal medicine: "cooling blood to stop bleeding, dehumidification and detoxification. Treat dysentery, metrorrhagia, lumbocrural pain, furuncle, mad dog bite. "

[usage and dosage] oral administration: decoction, 2-3 yuan; or grinding powder. External use: tamping or grinding.

[selection] ① for lumbago: buckwheat seven, taro seven, peach seven each two money. Grind fine powder together. Wash Baijiu, one time, two times a day. (Shaanxi Chinese herbal medicine)

② Treatment of sores and boils: seven amount of fresh buckwheat, mashed topical. (Shaanxi Chinese herbal medicine)

③ Burn treatment: four liang of hongyaozi, one or two of rhubarb, one or two of Sanguisorba officinalis, five yuan of borneol and one jin of sesame oil. The first four flavors are ground into fine flour, blended with sesame oil, and applied to the affected area. (Henan Chinese herbal medicine manual)

④ Treatment of diarrhea, dysentery, hematochezia: hongyaozi one or two, Diyu one or two. We have studied the surface. Take three yuan each time, two to three times a day, with boiled water. (Henan Chinese herbal medicine manual)