the phonetic name Yanɡ Mei Shu Pi

alias Yangmei Pi

Source

The basic source of medicinal materials: the bark of Myrica rubra, a Myrtaceae plant.

Latin plant and animal mineral name: Myrica Rubra (Lour.) Sieb. Etzucc. [Mosel la Rubra Lour.]

Harvesting and storage: it can be harvested all year round, and stems and roots are mostly peeled off while they are fresh during cultivation and renovation, or the whole roots are dug up, which are rarely used or dried.

The original evergreen tree is 12m high and has a spherical crown. Simple leaves alternate; Leaf blade is elliptic or oblanceolate, leathery, 8-13cm long, with narrow upper part, slightly blunt apex, narrow wedge-shaped base, entire, or a few obtuse serrations at the apex, with dark green and shiny upper part, slightly pale lower part, smooth and hairless, and golden yellow glands. Flowers dioecious; Male inflorescence constant strips clustered in leaf axils, cylindrical, about 3cm long and yellow-red; Male flowers with 1 bract, oval, sharp apex, 2-4 bracts, oval, 5-6 stamens; Female inflorescence is oval, about 1.5cm long, often solitary in leaf axils; The female flower has bracts and small bracts at the base, the ovary is oval and the style is very short. There are two slender stigmas. Drupe is spherical, about 1.8cm in size, with dark red exocarp and dense sacs. Endocarp is hard, about 9mm in size, and contains one endosperm-free seed. Flowering in April. Fruiting period is June-July.

habitat distribution

ecological environment: it is born in sunny slopes or valleys in low mountains and hills.

distribution of resources: Jiangsu, Zhejiang, Jiangxi, Fujian, Taiwan Province, Hunan, Guangdong, Guangxi, Sichuan, Guizhou, Yunnan and other places.

chemical constituents stem bark contains flavonoids: myricetin, myricetin, myricetin, myricetin, myricetin, myricetin, myricetin, myricetin, myricetin, myricetin, myricetin, myricetin and myricetin. Myricanol galloylglucoside, Myrica nol gentiobioside; Triterpenoids: myricadiol, 28- hydroxy -D- Friedan -14- ene -3- one (28-hydroxy-d-friedoolean-14-en-3-one), myricolal, oleanolic acid. 3,3'- di -O- gallacyl delphinidin b-1, B-2, B-5, and 3'-O- gallacyl delphinidin (3'-o-galloylprodel). It also contains gallic acid, racemic gallocatechin, levorotatory epigallocatechin, and vanillic acid.

Pharmacological effects

1. The decoction of bark and root bark has antibacterial effects on Shigella dysenteriae, Escherichia coli, Staphylococcus aureus, etc.

2. Hemostatic effect Root bark dry powder, free and semi-cut the femoral artery of big dogs, and apply pressure for 2min to stop bleeding.

bitter in nature; Xin; Slightly astringent; Sexual temperature;

meridian-entering liver; The function of stomach meridian

is mainly used to promote qi and blood circulation; Pain relief; Stop bleeding; Detoxification and swelling reduction. Indications for epigastric pain; Hypochondriac pain; Toothache; Hernia; Injury from falls; Fracture; Hematemesis; Hemorrhage; Hemorrhoid blood; Collapse and leakage; Traumatic bleeding; Sore swelling and pain; Ache; Epiphysis; Tanghuo scald; Acne; Eczema; Scabies; Cold; Diarrhea; Dysentery.

administration and dosage: decoction, 9-15g; Or soaked in wine, or into pills. External use: appropriate amount, decoction and fumigation; Or mouth; Or grinding and dressing; Or blow your nose.

pay attention to Quanzhou materia medica: pregnant women should not take it.

opinions of various schools

1. "Rihuazi Materia Medica": decoct soup to wash away malignant sores and scabies.

2. Compendium of Materia Medica: decoct water to wash toothache, take it to relieve toxic substances, burn ash and adjust oil, and apply soup for fire injury.

3. Jiangxi folk herbal medicine prescription: stopping diarrhea and dysentery.

excerpts from Chinese materia medica