(materia medica recommendation)
[synonyms] Jatropha curcas, Catalpa bungei, white flesh white: baozi (Chinese tree taxonomy), Catalpa bungei, Quercus macrophylla (materia medica).
[source] bark of Wutong tree.
[plant morphology] Wutong
Small trees. The stem is about 30 cm thick and the bark is smooth. Leaves alternate, clustered in branches; tender leaves red, ovate or rhombic, apex caudate and acute, base round or broadly cuneate, mostly entire, shallowly 3-lobed, membranous, 15-18 cm long, slightly equal in width, scattered yellow glands below, smooth on both sides when old, convex on both sides of middle rib and lateral vein, leaf base with 2 nectaries; petioles long, covered with brown hairs. It is dioecious, with terminal conical spikes, densely hairy rachis, and the male inflorescence is longer than the female inflorescence; the male inflorescence is sparse, with 3-5-lobed calyx, no corolla, and many stamens; the female inflorescence is dense, with 3-5-lobed sepals, 2-4-locular ovary, 1 ovule per locule, and 2-4-divergent style. Capsule globose, spiny. The flowering period is June. The fruiting period is September (Jiangsu).
It is distributed in Jiangsu, Zhejiang, Fujian and Taiwan.
[chemical] bark contains cabbage, leaves contain rutin, Wutong enol and its linolenic ester.
[pharmacological action] the water extract of leaves and rutin extracted from leaves can promote bile excretion (in dogs or rabbits) by intravenous injection of 20-200 mg / kg in appropriate amount, but a large amount is ineffective. Bergenin did not promote bile excretion and analgesia. The results showed that the water extract of the leaves could only be lethal by injecting 100 mg / 10 g into the abdominal lymph sac of frog, 100 mg / 10 g subcutaneously, 20 mg / 10 g intraperitoneally or 5 mg / 10 g intravenously in mice, so it had little toxicity. Water extract (15g / kg) can prevent pyloric ligation ulcer in rats and inhibit the increase of vascular permeability induced by histamine, 5-hydroxytryptamine and bradykinin. It can also inhibit the edema induced by dextran, 5-hydroxytryptamine, croton oil and formaldehyde in rats, but can not inhibit the edema caused by egg white; it can also reduce the number and volume of experimental calculi in rats' bladder, and increase the excretion of magnesium and calcium in urine.
[function indications] Chinese medicine plant Atlas: "adjust digestive function, treat gastric ulcer and duodenal ulcer. "
[usage and dosage] oral administration: decoction, 3-4 Qian, or powder.
Chinese PinYin : Ye Wu Tong
Fritillaria thunbergii. Zhe Bei Mu
Ghost pen. Gui Bi
Hypericum perforatum. Guan Ye Lian Qiao
Baikema leaf. Bai Ke Ma Ye
Croton root. Ba Dou Shu Gen
Pseudomagpie kidney tree. Jia Que Shen Shu
Crucian carp head. Ji Yu Tou
Liu Chuanyu. Liu Chuan Yu
Loquat root. Pi Pa Gen
Scirpus Tabernaemontani. Shui Cong
Salt bran tree bark. Yan Fu Shu Bai Pi
Bamboo moth powder. Zhu Du Chong Zhu Mo