1. Alias
Lotus root nodes, lotus root node scars.
2. Plant morphology
Perennial aquatic herb. The leaves are round shield shaped, with the entire edge slightly wavy, smooth on top, and covered with white powder; The petiole grows in the center of the leaf back, with scattered thorns on the surface. The stem and petiole are of equal or slightly higher height; Large flowers, single terminal, pink or white, fragrant; Calyx 4-5, green, small, early setting; Petals are numerous, oblong elliptical to ovate in shape, with blunt tips that gradually become smaller from the outside to the inside; Most stamens, fall early; The anthers are linear, yellow in color, with a rod-shaped appendage at the tip of the stamen. The filaments are slender and grow inside the receptacle, which is conical in shape and flat at the top. It has 20-30 small holes and is sponge like, commonly known as the "lotus pod". Nuts are oval or ovoid in shape, with hard and leathery skin; There is one seed inside, commonly known as a "lotus seed". The flowering period is from July to August, and the fruiting period is from September to October.
3. Origin distribution
Produced in most parts of the country. Mainly produced in ponds and lakes in Hunan, Fujian, Jiangsu and other places.
4. Harvesting and processing
When digging lotus roots in autumn and winter, cut off the sections, wash them thoroughly, and dry them in the sun.
5. Characteristics of medicinal herbs
Short cylindrical shape. 2-4 centimeters in length and 2 centimeters in diameter. The surface is gray yellow to gray brown, with slightly enlarged central nodes and numerous fibrous root scars. Sometimes dark reddish brown scales and leaf residues can be seen; There is a small circular hole in the center of its cross-section, with 7-9 large holes around it. Light body, hard joints, difficult to break. Qi is absent, with a slightly sweet and astringent taste.
6. Sexual Taste Returning to the Classics
Flat in nature, sweet and astringent in taste. Return to the liver meridian, lung meridian, and stomach meridian.
7. Effect and Function
Converge and stop bleeding, remove blood stasis. A converging hemostatic drug belonging to the subcategory of hemostatic drugs.
8. Clinical application
Dosage: 9-15 grams, decoct soup orally, 10-30 grams; Fresh mashed juice, about 60 grams of juice can be taken and consumed; Or add a dispersing agent. Used to treat stagnation and heat in the stomach, vomiting blood, hemoptysis, nosebleeds, hematuria, and diarrhea.
9. Pharmacological research
Fresh use can clear heat and cool blood, calcine charcoal to remove blood stasis and stop bleeding, has a strong astringent effect, and can shorten bleeding time.
10. Chemical composition
Containing tannins, aspartic acid, alanine, asparagine, 3-Betulinic acid and other components.
11. Usage taboos
Avoid iron tools.
12. Compatibility prescription
① Treating sudden vomiting of blood: Seven lotus root nodes and seven lotus leaf tips. Grind the honey finely, add two cups of water, fry for eight minutes, remove the residue and warm up, or grind the honey into powder and mix. ("Holy Blessing Formula" Shuanghe San)
② After the fall of the horse, there is blood accumulation in the chest and continuous spitting: 150 grams of dried lotus root nodes. The upper medicine is finely ground into powder, and 9 grams are mixed with warm wine for each dose, taken three or four times a day. (Holy Blessing Formula)
③ To treat vomiting, hemoptysis, and bleeding: take lotus root juice and mash it. (Hygiene Easy Recipe)
④ Treating vomiting and bleeding: Mix lotus root juice, raw rehmannia root juice, and big thistle juice in triplicate, add five spoons of raw honey, mix well, take one small cup each time, no matter when. (Chishui Xuanzhu)
⑤ Treating bloody stool: Sun dry seven lotus root nodes, add seven teaspoons of white honey, two bowls of water, boil one bowl and take. (One Hundred and One Choices)
⊙ The content of the article is for clinical reference only. Non TCM professionals are not allowed to test drugs.