Rhizoma Imperata

(notes to the classic of Materia Medica)

[synonyms] Maogen, Langen, Rugen (Ben Jing), Dikan, Dijin, Jiandu (BIE Lu), baihuagen (rihuazi materia medica), dijiegen (Qinghai herbal medicine), Maocao (Jiangsu Zhi Yao Zhi), Jiancao (Hebei Yao CAI), simaogen (Chinese herbal medicine), hancao (Mindong materia medica).

[source] it is the rhizome of gramineous plant Imperata.

[plant morphology] Baimao (annotation of Materia Medica Classic), also known as baimaokan (Tao Hongjing), Simao (compendium), wangencao (Tieling county annals), Maocao.

Perennial herbs. Rhizome densely scaly. Culms tufted, erect, 30-90 cm high, with 2-3 nodes, 4-10 mm long pilose nodes. The leaf sheath is glabrous, or the upper part and the edge and the sheath mouth are ciliated, the base is broken or fibrous when old; the ligule is dry membranous, blunt, about 1 mm long; the leaf blade is linear or linear lanceolate, the apex is acuminate, the base is narrower, the root leaf is long, several equal to the plant, and the stem leaf is short. Panicle columnar, 5-20 cm long, 1.5-3 cm wide, branches short and dense; spikelets lanceolate or oblong, 3-4 mm long, base densely 10-15 mm filiform pilose, with spikelet petioles of different length; two glumes equal or the first glume slightly short, except for the lower part of the back slightly herbaceous, the rest are membranous, with cilia at the edge, the back sparsely filiform pilose, the first glume narrow, with a long stalk The first lemma is ovate oblong, about 1.5 mm long, apex obtuse, palea absent; the second lemma is lanceolate, 1.2 mm long, apex pointed, both sides slightly denticulate; the palea is about 1.2 mm long, about 1.5 mm wide, apex truncate, with different teeth; stamen 2, anther yellow, about 3 mm long; stigma 2, dark purple. Caryopsis. The flowering period is summer and autumn.

Most of them grow on roadsides, hillsides and grasslands. It's distributed across the country several times.

The leaves, primary inflorescences and spikes of this plant are also used for medicine.

[collection] dig in spring and autumn, remove the aboveground parts and soil, wash and dry them in the sun, and knead the fibrous roots and membranous leaf sheaths.

[medicinal materials] the dried rhizome is slender and cylindrical, sometimes branched, with different lengths, usually 30-60 cm long, about 1.5 mm in diameter, milky white or yellowish white on the surface, with light brownish yellow and slightly raised nodes, and the pitch is about 3 cm. Light and tough, not easy to break. The cross section is fibrous, the center is yellowish white, and there is a small hole. The outer ring is white and full, or there are numerous gaps, such as wheel shape. The outer ring and the center are easy to peel off. Slightly sweet. Coarse fat, white color, no fibrous root and sweet taste are preferred.

It is produced in most parts of the country.

[chemical composition] it contains a large amount of sucrose and glucose, a small amount of fructose, xylose, citric acid, oxalic acid and malic acid, and 21% starch. In addition, it has been reported that genistein was isolated from this product.

The rhizome contains mannitol, glucose, fructose, sucrose, citric acid, malic acid, Coix, arundinace and Imperata

[processing] dry grass root: clean impurities, wash, moisten slightly, cut into sections, dry in the sun, and winnow debris. Maogen charcoal: take the Maogen section, stir fry it in a pot with fire until black, spray with water, take it out and dry in the sun.

Sweet and cold.

① Ben Jing: "it tastes sweet and cold. "

② Bielu: "non toxic. "

③ Ben Cao Zheng: "sweet, cool. "

④ Ben Cao Zai Xin: "it tastes sweet and bitter, has a cold nature, and is non-toxic. "

[channel tropism] entering lung, stomach and small intestine.

① "Diannan Materia Medica": "into the stomach, small intestine two channels. "

② In the classic of Materia Medica, it is said that "when you start with Shaoyin, you will be full of Taiyin and Yangming. "

③ "Depei Materia Medica" says: "start with Shaoyin and Taiyin, and enter the Taiyin and Yangming meridians. "

④ "Into the stomach, liver. "

Functions and indications: cooling blood, hemostasis, clearing heat and diuresis. It is used to treat febrile disease, thirst, hematemesis, hematemesis, lung heat, dyspnea, stomach heat, gonorrhea, adverse urination, edema and jaundice.

① "Ben Jing" says: "it is mainly used to relieve fatigue, invigorate the middle and replenish qi, eliminate blood stasis, blood stasis, cold and heat, and facilitate urination. "

② Bielu: "the next five Lin, in addition to guest heat in the stomach, thirst, muscle, women collapse.". "

③ "Rihuazi Materia Medica" says: "housewives have irregular menstruation, and their blood is flowing. "

④ "Diannan Materia Medica": "stop hematemesis, bleeding, treatment of blood drenching, diuresis, stop women bleeding. "

⑤ "Compendium": "anti vomiting, blood stasis, typhoid fever, dyspnea, lung heat, edema, jaundice, detoxification. "

⑥ "This Jing meets the original": "the treatment of stomach counter Qi, five drenching pain heat and acne dry Purple can not afford. "

⑦ "Animal and plant folk medicine": "treating beriberi. "

[usage and dosage] oral administration: decoct soup, 3-5 yuan (1-2 Liang fresh); mash juice or grind powder.

[should avoid] spleen and stomach deficiency cold, more than not thirsty avoid taking.

① According to the classic of Materia Medica, it is not allowed to take it because of cold, vomiting, phlegm retention and fever. "

② From the new materia medica: "it is not appropriate to vomit blood because of deficiency cold. "

[prescription selection] 1. Treatment of hematemesis: a grasp of Rhizoma Imperata. Take it in water. (qianjinyifang)

② Treatment of epistaxis due to blood heat: one set of Rhizoma Imperata juice. Drink it. (women's prescription)

③ Treatment of epistaxis more than: Maogen for the end, rice swill take two money. Sheng Hui Fang)

④ Treatment of asthma: Maogen a grip (raw with rotary mining), equal. Water two, fry one, remove dross, warm clothes, after eating. (Sheng Hui Fang is like a God's soup)

⑤ Treatment of febrile diseases with heat, drinking water sudden cold: Maogen, (each cut) half a liter. Take four liters of water, boil two liters, and drink slightly warm, then stop. (xiaopinfang Maogen Tang)

⑥ For stomach regurgitation, the food is vomited out, and the upper Qi and the root of grass are two liang each. Finely cut, take four liters of water, boil two liters, take it, good. (Qian Jin Fang)

⑦ Cure urination heat drench: white grass root four rise. Five liters of water in a bucket, five liters boiled, suitable for cold and warm drinking, three times a day. (behind the elbow)

⑧ Cure urination haemorrhage: Mao Gen is one. Cut and fry a large cup of water until five minutes. Remove dross and take it warm. (Sheng Hui Fang)

⑨ Treatment of overwork and drowning: Maogen, bisection. One spoonful of honey, two minutes of water, one hour of frying, one serving a day. (compendium)

⑩ Treatment of hematuria: Imperata root, each one or two, sugar five money. Take it in water. (selected materials of new medical treatment of Chinese herbal medicine, Inner Mongolia)

(11) chyluria treatment: fresh grass root half Jin. Add 2000 ml of water and fry to about 1200 ml, add appropriate amount of sugar. Take it orally three times a day, or drink tea instead, and take it for five to 15 days as a course of treatment. (selected materials of Jiangsu new Chinese herbal medicine therapy exhibition)

Nephritis: one or two, one or two, five of gourd shells, and one yuan for baijiu. Decoct in water, take twice, one dose a day, avoid salt. (selected materials for investigation of unilateral and verified prescriptions)

In the treatment of Yang deficiency, it can't change Yin, and it's not good for urination, or it's dampness and heat stagnation, so that it's not good for urination, and it's accumulated into edema: a catty of Rhizoma Imperata. Take the fresh ones, remove the skin and internode roots, cut them carefully, boil the roots in four bowls of water, move the pot to the stove, wait for ten minutes, if the roots don't sink to the bottom of water, boil again, move the pot to the stove, in a moment, all the roots sink to the bottom of water, then the soup is ready, remove the dregs, take warm clothes, half a cup, take five or six times a day, take two or three times at night, make the medicine power successively, and urinate at 12 o'clock Self interest. (baimaogen Decoction in Zhongshen Xilu of Medicine)

(14) treatment of apoplectic ascites: a handful of Rhizoma Imperata and three liters of adzuki bean. Three liters of water, boil dry, to grass root beans, water with urine. (behind the elbow)

Treatment of jaundice, grain jaundice, alcohol jaundice, female jaundice, labor jaundice and yellow sweat. Carefully cut, with pork a Jin, cooperation soup, do sip it. (behind the elbow)

(16) treatment of blood heat by withered and closed: Mao gen, Huang, Tongbian. Take it by frying. (Ben Cao Jing Shu)

Solution of Datura poisoning: one or two roots of Imperata, one catty of sugarcane. Mash, juice and fry in a coconut water. (main poisonous plants in South China)

(18) febrile disease is characterized by heat in the stomach, which makes the chest full and causes Qi inversion, which is called Qi. With the grass root, Pueraria lobata, Pueraria lobata each half Jin, add water three liters fried into a liter and a half. Take one cup of each, warm water. Stop taking it when you stop.

(19) nausea means vomiting when eating meat. Use two pairs of grass root and two pairs of reed root, add four liters of water, boil them into two liters, take them at a time.

Lung heat and asthma. Use a handful of raw grass root, bite it fine, add two bowls of water, cook it into a bowl, and take it warm after dinner. Three take the disease. This prescription is called "rushen Decoction".

(21) body deficiency edema (urination is not good, but drinking a lot). Use a handful of white grass root, three liters of adzuki beans and three liters of water to boil. Go to Mao food. The water is discharged with the urine.

(22) five kinds of jaundice (jaundice, grain jaundice, alcohol jaundice, female jaundice, labor jaundice). The body is slightly fat, sweating like yellow juice). Use a handful of raw grass root, cut it into small pieces, and simmer it with a kilo of pork.

(23) hot urine. Use four liters of white grass root, add five liters of water, cook five liters, warm. Once a day.

(24) blood in urine. Divide Maogen and dried ginger into two parts, add a spoonful of honey and two cups of water, fry them into a cup and take them. Once a day.

(25) nosebleed. Grind with the grass root, take two money each time, wash rice water to send down.

Chinese PinYin : Bai Mao Gen