Castor leaf

Castor leaf

(Tang materia medica)

[source] it is the leaf of castor in Euphorbiaceae, and the plant morphology is detailed in "castor seed".

[herbal medicine] most of the dried leaves are broken and shrunk, and the intact ones are palmately split, 20-40 cm in diameter. The lobes are oval lanceolate to rectangular round, with irregular serrations on the edge. The upper part is green brown or reddish brown, and the lower part is light green. The main veins are palmately shaped, and the lateral veins are pinnate, and both sides are raised. The petioles are papery, and the petioles are shield shaped, dark red. It is slightly bitter. It is better to be dry without branches.

[chemical constituents] the leaves contain kaempferol-3-rutinoside, isoquercetin, rutin, kaempferol, quercetin, astragaloside and renoside. It also contains ricinine and vitamin C_ 275mg%。

Among them, linoleic acid 7.25%, β - Tung acid 8.0%, linolenic acid 12.25%, oleic acid 44.10% and saturated fatty acid 13%.

[pharmacological action] the concentration of leaves in water can increase the contractility of isolated heart in normal and inhibited state. The decoction of leaf and stem can reduce the blood pressure of dog, dilate the blood vessels of hind limbs of rats, and slightly excite the uterus and rectus abdominis of rats. The leaves and their extracts can also kill maggots and mosquito larvae.

[nature and taste] Compendium: "poisonous. "

[function indications] it is used to treat beriberi, prevent swelling and pain of bladder, cough, phlegm and asthma, goose palm wind, sore and furuncle. "

① "Tang materia medica:" the main beriberi wind swelling is not benevolent, ramming and steaming. "Oil leaves, hot ironing fontanelle, Zhiyu is particularly effective. "

② "Gangmu": "treatment of phlegm, asthma and cough. "

③ "Lu Chuan's Materia Medica" says: "cure evil sores. "

④ Guangdong traditional Chinese Medicine II: "external washing with decocted water can cure night sweats. "

[usage and dosage] oral administration: pills and powder. External use: frying, hot ironing or tamping.

[prescription selection] ① for the treatment of the initial onset of beriberi, swelling and pain from the foot to the knee, and stubborn numbness: steamed castor leaves. (collection of herbs in Lingnan)

② Treatment of renal cyst hernia: castor leaf and salt mash, foot Yongquan point. (collection of herbs in Lingnan)

③ Cure cough phlegm saliva: castor cotyledon three money, fly over alum two money. Four taels of pork, thin batch, pan Likai, mixed with medicine, wrapped in lotus leaves, simmered over a gentle and martial fire, chewed carefully, sent down the white soup, and then pressed with dry food. (Jiuxian San in Confucian Affairs)

④ For years, cough, saliva and asthma, and restlessness at night: mulberry leaves, castor leaves, and rice husk (fried with honey). On the fine powder, refining honey for the ball, such as marble big, each take a pill, after eating, white soup, into a day. (no worry pill in Puji Fang)

⑤ Rule of goose palm: fresh castor leaves, rub soft paste on the affected area, dry again easy. (experimental research of traditional Chinese Medicine)

⑥ For carbuncle and furuncle: soak dry castor leaves in hot water and paste on the affected area. Fresh leaves are better. (experimental study of traditional Chinese Medicine)

Chinese PinYin : Bi Ma Ye