Also known as elm bark.

Morphological features deciduous tree, up to 18 meters high. Bark dark gray-brown, rough, with longitudinal grooves; branchlets soft, hairy, light gray-yellow. Leaves alternate; simple; obovate, elliptic-ovate or elliptic-lanceolate, apex acute or acuminate, base rounded or cuneate, margin usually singly serrate, dark green above, glabrous, pubescent below when young, only vein axils white velutinous when old; petiole hairy; stipules lanceolate, hairy. Flowering from March to April. Flowers open before leaves, clustered, shortly pedicellate. Samaras obovate or suborbicular, smooth, apex notched. Seeds are located in the center, connected with the notch. The old strips are cut in spring or between August and September, and the inner bark is immediately peeled off and dried in the sun.

Growing environment in most parts of China are distributed.

The flavor and efficacy of sweet taste, nature flat. It is used to relieve water retention, clear the flow of gonorrhea, and reduce swelling.

Selected prescriptionsFirst formula: 15 grams each of elm white bark, angelica, motherwort.

Use: Decoction with water.

Treatment: blood after abortion. Second formula: 15 grams of elm white bark, 30 grams of Shi Wei, 15 grams of Psoralea, 30 grams of Bai Mao Gen.

Use: Decoction with water, take in 2 times.

Treatment: astringent pain in urination, blood in urine. Third party: 12 grams of white bark of elm root.

Use: water decoction divided into 2 times in the morning and evening, 1 dose per day, for 3 to 5 days.

Treatment: wheezing and coughing, coughing and sputum. The fourth formula: 60 grams of elm white bark, small artichoke, ditto, dandelion, amaranth, 15 grams each.

Use: *** dry, finely ground, dry sprinkle or sesame oil dressing on the affected area.

Treatment: bedsores, skin infections. The fifth formula: elm white skin 30 grams.

Use: water decoction in 2 doses, 1 dose per day, for 3 to 5 days.

Treatment: deficiency labor urine white turbidity. The sixth formula: fresh elm leaves appropriate amount, a little sugar.

Usage: pounded on the affected area, change 1 time a day.

Treatment: boils. Seventh formula: elm leaves appropriate amount.

Use: research fine, dry sprinkle wound, pressure bandage. You can also pick fresh leaves, wash and pound them, and apply them to the wound.

Treatment: knife wound bleeding. The eighth formula: elm white skin appropriate amount.

Use: drying, research fine powder, each with the appropriate amount, egg white coated with the affected area.

Treatment: Dan poisoning.