Oak bark

Oak bark

(Jilin Chinese herbal medicine)

[synonym] Dao shuerbamnamu (Chao Ming).

[source] the bark of Quercus mongolica, a Fagaceae plant.

[plant morphology] Quercus mongolica, also known as oak, oak bowl, Quercus microphylla and qinggangbiao.

Deciduous trees, up to 30 m high. Bark dark gray, deeply lobed; young branches smooth, angulate, purplish brown. Leaves obovate to oblong obovate, 7-17 cm long and 4-10 cm wide, apex obtuse or acute, base auricular, margin with lanceolate teeth, usually 8-9 pairs, veins hairy when young, glabrous when old, lateral veins 7-11 pairs, petiole 2-5 mm long. Flowers unisexual, monoecious; male inflorescence spicate, pendulous, in axils of new branches, male perianth 6-7-lobed, stamens usually 8; female perianth 6-lobed. The calyx is annular, encircling the nut 1 / 3-1 / 2, 1.5-2 cm in diameter, 0.8-1.5 cm in height, thick in wall; bracts small, triangular. Nuts ovate to longovate, 1.3-1.8 cm in diameter, 2-2.3 cm in length, glabrous. The flowering period is May and June. The fruit period is from August to October.

It grows in the open forest on the sunny and dry hillside. It is distributed in Shandong, Hebei, Shanxi, Inner Mongolia and Northeast China.

The leaves (tussah leaves) of this plant are also used for medicine. Please refer to the special section for details.

[collection] it was collected in spring and autumn, scraped off the outer coarse skin, dried or calcined.

Functions and indications: diuresis, heat clearing and detoxification. Treatment of enteritis, diarrhea, dysentery, jaundice, hemorrhoids.

[usage and dosage] oral: decoction, 2-3 yuan. External use: tamping or boiling water to wash feet.

[formula selection] ① for dysentery, enteritis and diarrhea: oak bark Wuqian. Fried in water, three times a day.

② Treatment of jaundice: oak bark, calcined charcoal grind powder. Two dollars a time, three times a day.

③ Treatment of hemorrhoids: fresh oak bark mashed, applied to the affected area. (its main functions are as follows: Jilin Chinese herbal medicine)

[clinical application] ① treatment of infantile diarrhea

Take 3 liang of oak bark, wash and chop, add 4000 ml water, fry into 1000 ml, soak feet with this decoction, half an hour each time. For the seriously ill, take orally 20 ml of decoction, 2-3 times a day. In 200 cases, 96.5% were cured and improved.

② Treatment of amoebic dysentery

Take 200 grams of fresh oak bark, add water and boil for 15-20 minutes to make 1000 ml decoction. Take it 3 times a day, 5-10 ml each time before meals. Can also use Decoction enema. After clinical verification, it has certain curative effect without any side effect.