Pharmacological action: The sesquiterpene γ -lactone isolated from it has inhibitory effect on Staphylococcus aureus and Escherichia coli in vitro.

Administration and dosage: oral: decocted, 10- 15g, double fresh; Or pound juice; Let's grind it. Source: Chinese materia medica

Efficacy: clearing heat and promoting diuresis; Cooling blood and stopping bleeding

Ecological environment: Born on roadsides, wasteland, floodplain, grassland, dry hillside or forest edge at an altitude of 500-4200m.

Harvesting and storage: harvesting in summer and autumn, rarely used or tied to dry.

Indications: arthralgia due to wind-cold-dampness, jaundice, dysentery due to heat, scabies and scabies. (1) Classic: "Dominate the evil spirits of the five internal organs, cold-dampness arthralgia, tonify the middle energizer, and make the hair black. Treat your heart and eat less hungry. "

(2) Meng Wei: "Pour the juice to get rid of the hot yellow heartache. Dry leaves are the end, diarrhea in summer. Drink a spoonful of rice and take it on an empty stomach. " He also burned ashes and poured them out to treat diseases. "

Medicinal material identification

Trait recognition

The stems are cylindrical, with different lengths and a diameter of 5 mm. Green, with longitudinal edges on the surface and alternate branches, leaves or leaf bases. The upper part is densely pilose. Hard and brittle, easily broken, with fibrous cross section and white pulp in the center. The leaves are shriveled or broken, and after the complete leaves are flattened, they split pinnately for two or three times, with linear lobes and pilosity on both sides. The flower heads are numerous, hemispherical, 3-6mm in diameter, with slender pedicels, linear involucre leaves, 2-3 rows of involucre, wide white diaphragm at the edge and pubescence on the back; Receptacle ovoid; The edge is female, and the inner flowers are bisexual and tubular. An obovate achene can be seen in the mature inflorescence. Strong smell, slightly bitter taste. Microscopic identification: stem cross section: polygon. A series of cells in the epidermis are covered with T-shaped hairs, most of which are radial and long. The kjeldahl point of the endodermis is obvious. Thickening and lignification of fiber wall of vascular bundle sheath. The phloem is wider. The cambium is not obvious. Vascular bundles are arranged in a ring and a vessel polygon, and 2- 12 groups are arranged in a single row. Wood fiber has a large distribution area and a thick cell wall. The rays are in a single row, and there are inclusions in the cell cavity. The resin channel is loose. The pith is large and the surrounding cell wall is thickened.

Blade cross section

The upper and lower epidermal cells are 1 row, surrounded by stratum corneum; Most T-hair or its residues are naked; Both the upper and lower epidermis have pores, but the lower epidermis has more. Palisade tissue 1-2 cells, sponge tissue cells. There is thick keratinous tissue under the epidermis at the main vein. The vascular bundle of main vein is often 1 bundle. Resin channels are scattered in the palisade tissue.

Powder characteristics

Grayish white.

① Non-glandular hairs are T-shaped, 3-5mm long, colorless, smooth in surface and slightly thick in cell wall.

② Most fibers are single broken, bundled or scattered, with a diameter of 9-36μm, slightly curved cell wall thickness, narrow cavity and few or no pits.

③ Catheters are rare, mainly reticular ones, with red threads and trapezoidal lines, with holes at the edges and a diameter of12-35μ m. ..

④ There are many single crystals with different shapes, with the size of 23-92μm, which are insoluble in hydrochloric acid.

⑤ Thin-walled cells are mostly quadrangular, polygonal or quasi-circular, colorless, with a few pits.

clinical application

Take two kinds of fresh Artemisia annua or two kinds of dry Artemisia annua 1, and decoct in water. Take it 2 ~ 3 times, daily 1 dose, 5 ~ 7 days as a course of treatment; Or made into granule and tablet for administration. * * * Treatment 100 cases, 70 cases were markedly effective (clinically cured within 3 days), 23 cases were effective (clinically cured within 4-7 days), and the cure rate was 93%. According to the observation of some cases, after taking the medicine, the body temperature returned to normal for an average of 65,438 0.35 days, then returned to normal for 2.65,438 0.02 days, and the abdominal pain disappeared for 65,438 0.55 days and then disappeared for 65,438 0.68 days. The average time for stool to return to normal and bacteria to turn negative was 3.02 days and 5.65 days respectively. The curative effect seems to be higher than that of coptis chinensis, furazolidone and synthetic mycin. Granules and tablets seem to be less effective than decoction. Its stems and leaves can be used as medicine. According to Compendium of Materia Medica, it is bitter, flat, slightly cold and nontoxic. Indications: pathogenic wind, cold and heat. Heat-induced jaundice, long-term use, wisdom and health, qi, anti-aging, white face for many years. Treat yellow body, adverse urination, reducing head fever, removing abdominal cavity, dredging joints, removing stasis heat, typhoid fever and so on. Attachment: Chen Yin soup. In addition to heat jaundice, typhoid pain, wind-heat malaria, urination; Slice wormwood and cook soup. Raw food is also suitable.

Young stems and leaves are edible. When Tomb-Sweeping Day comes, it is the heyday of Artemisia ordosica, and people come in an endless stream to pay homage to the grave and collect Artemisia ordosica to cure diseases or relieve their hunger. There are many ways to eat mugwort leaves. First, it is used as stuffing for steamed stuffed buns and jiaozi. The second is to add corn flour when steaming corn bread. You can also mix tofu or steam it alone.

Artemisia ordosica Bun: Wash the tender stems and leaves of Artemisia ordosica, chop them, mix them with corn flour, mix well and steam them. It can not only regulate food, but also prevent and treat diseases.