Rhododendron

Rhododendron

(compendium)

[synonyms] Rhododendron Rhododendron (flowers and trees in Luoyang), Rhododendron Rhododendron, pomegranate and YINGSHANHONG (compendium), Yanshanhong (classified herbal medicine), yanshanhua and shanhuihui (Guizhou folk medicine Collection), manshanhong and qingminghua (Jiangxi folk herbal medicine prescription), hongchaitonghua, dengzhanhonghua, shanchahua (Zhejiang folk herbal medicine), chongniao, Primula (Jiangxi herbal medicine) The results showed that there was no significant difference between the two groups (P > 0.05).

[source] it is the flower or fruit of Rhododendron.

[plant morphology] Rhododendron

Evergreen or semi evergreen shrubs, up to 3 m tall. Branches thin and numerous, densely covered with yellow or brown procumbent setae. Leaves ovate elliptic or obovate, 2-6 cm long, 1-3 cm wide, apex pointed, base cuneate, sparsely hirsute above, densely brown hairs below, more veins. The flower has 2-6 clustered branch ends; sepals 5, elliptic ovate, 2-4 mm long, densely covered with brown bristles, persistent; corolla rose to light red, broadly funnel-shaped, about 4-5 cm in diameter, lobes nearly obovate, upper 1-petal and proximal 2-petals with dark red spots; stamens 7-10, thin hairs under filaments; anthers purple; ovary ovoid, densely covered with bristles, stigma capitate. Capsule ovoid, 5-8 mm long, densely hirsute. The flowering period is April. The fruit is hot in October.

Born on hillside or flat land, forest, rock bank. It is distributed in Henan, Hubei and south of the Yangtze River.

The root (Rhododendron root) and stem and leaf (Rhododendron Leaf) of this plant are also used for medicine. Please refer to the special section for details.

[collection] harvest from April to May when it is in full bloom and dry in the sun.

[chemical constituents] the flower contains anthocyanins and flavonols, which are the pigment of the flower. The most common red pigments (anthocyanins) are cyanidin 3-glucoside and cyanidin 3,5-diglucoside. Generally, these two pigments exist at the same time. The anthocyanins of purple flower contain 3,5-diglucoside. The most common flavonol is Rhododendron 3-rhamnoglucoside. In addition, myricetin 5-methyl ether was also found in the flavonols of Zihua.

[pharmacological] mice received intraperitoneal injection of Yingshan red decoction had a cough relieving effect (ammonia water spray cough method), and its ethyl acetate extract, chloroform extract and its mother liquor, separated crystalline and crystalline B (flavonoid compounds) also had antitussive effects. The decoction has expectorant effect in mice (phenol red method). Guinea pigs were given intraperitoneal injection without dry asthma (histamine spray).

Sweet and sour, warm.

① "Gangmu": "sour taste, non-toxic. "

② Classified herbal medicine nature: "sweet taste, warm nature. "

③ Sichuan Traditional Chinese medicine annals: "the nature is flat, the taste is sour and pungent, non-toxic. "

Functions and indications: harmonizing blood, regulating menstruation, dispelling wind and dampness. Treatment of irregular menstruation, amenorrhea, metrorrhagia, traumatic injury, rheumatic pain, hematemesis, bleeding.

① "Classification of herbal medicine nature": "treatment of hematemesis, metrorrhagia, wind cold, and blood. "

② "Guizhou folk medicine collection" says: "it can treat irregular menstruation, stop red collapse; it can treat rheumatism by soaking wine and taking it orally. The fruit stops the pain. "

③ "Sichuan Traditional Chinese medicine annals": "treatment of abdominal pain, diarrhea, hemorrhoid bleeding and internal injury cough. "

[usage and dosage] oral administration: flower: decoction, 0.5-1 Liang; fruit: Yanmo, 3-5 points.

[selection] 1. For the treatment of Yuejia disease, the meridians are closed and thin: YINGSHANHONG Er Liang. Take it in water.

② Treatment of traumatic pain: yingshanhongzi (end of research) 5 points. Swallow the newspaper with wine.

③ Treatment of nosebleed: Yingshan safflower five money to one or two. Take it in water. (1) Guizhou herbal medicine

④ Treatment of leucorrhea: Rhododendron (with white flowers) five money, and pig feet with the right amount of cooking, eat soup and meat. (Zhejiang folk herbs)

Chinese PinYin : Du Juan Hua