Quercus variabilis

Quercus variabilis

(Yunnan Chinese herbal medicine)

Another name: Huangli tree (Yunnan Chinese herbal medicine).

[source] it is the bark of the Fagaceae plant.

[plant morphology] Cotinus coggygria

Evergreen trees, 15-20m high. The bark is dark gray, irregularly longitudinally lobed; the branchlets are yellowish brown tomentose. Leaves alternate, leathery; leaves long elliptic or ovate long elliptic, 8-12 cm long, 2.5-5 cm wide, apex acuminate or short acuminate, base cuneate or suborbicular, slightly oblique, margin above middle sparsely serrate, glabrous above, dense gray yellow villi below, lateral veins 10-13 pairs; petiole 1-2 cm long, villous. The flowers are unisexual, monoecious; the male flowers are catkin, yellow; the female inflorescence is stout, with 5-8 flowers and separate styles. The calyx is deeply discoid, encircling 1 / 2 of the nut, 1.4-1.9 cm wide and 0.5-1 cm high, with yellow villi on the inner side and short gray villi on the outer side; the bracts combine to form 6-7 concentric rings with shallow teeth; the nut is subglobose or broadly ovate, 1.2-1.6 cm in diameter and 1.2-1.8 cm in length, puberulent; the navel is slightly raised, about 1 cm in diameter.

It grows in mountain broad-leaved forest. It is distributed in Yunnan.

[collection] all year round. Peel off the bark and dry.

[chemical composition] tannin was found in bark and cupule, the content of tannin in bark was 10.24%, and starch in seed.

[flavor] slightly bitter, slightly warm.

[function indications] relieving asthma.

[selection] for asthma: one or two from the bark of Quercus citri and one or two from the bark of wax gourd. At the end of the research, mix with honey, then wash the old wall soil with boiling water, and take the clear liquid to serve. Two dollars a time, three times a day. (Yunnan Chinese herbal medicine comes from nature and taste)

Chinese PinYin : Huang Li