Introduction of Man Shan Hong:Dahurian Rhododendron Leaf or Folium rhododendri Daurici.
✵The article gives records of the herb Dahurian Rhododendron Leaf, its English name, Latin name, property and flavor, its botanical source one plant species, ①.Rhododendron dauricum L., with a detailed introduction to the botanical features of this plant species, the growth characteristics, and ecological environment of this plant species, the features of the herb Dahurian Rhododendron Leaf, its pharmacological actions, medicinal efficacy, and administration guide.
Pin Yin Name: Mǎn Shān Hónɡ.
English Name: Dahurian Rhododendron Leaf.
Latin Name: Folium rhododendri Daurici.
Property and flavor: warm, pungent, bitter.
Brief introduction: The herb Folium rhododendri Daurici is the dried leaf of Rhododendron dauricum L.(Family Ericaceae), used as an antitussive and expectorant for acute and chronic bronchitis.
Botanical source: The herb Folium rhododendri Daurici(Dahurian Rhododendron Leaf) is the dried leaf of Rhododendron dauricum L., it is a plant of Rhododendron L. genus, the Ericaceae family of the Ericales order. It is also known as Folium Rhododendri daurici, or Mǎn Shān Hónɡ.
Herbal classic book defined the herb Folium rhododendri Daurici(Dahurian Rhododendron Leaf) as the dried leaf of:(1). Rhododendron dauricum L. This commonly used species is introduced as:
(1).Rhododendron dauricum L.
Botanical description: Semievergreen shrubs, 1~2 meters high. The bark is pale grey. Much branched, branchlets are slender and curved, dark gray, scaly and pilose. Buds ovate scales broadly ovate. Leaves alternate; Petiole 2~5 mm long, slightly hairy; Leaf blade subleathery, set on the upper part of branchlets, elliptic or ovoid oblong, 1~7 cm long, 1~3 cm wide, apex obtuse, shortly acute, base cuneate, entire, dark green above, scattered white glandular scales, light green below, densely glandular scales. Winter rolled into a simple shape, knead after the aroma. Flowers 1~4 apical, first leaves open, pink or purplish-red; Sepals short, dividing, densely scaly outside; Corolla funnelform, ca. 1.8 cm long, 5-lobed, exsersely pilose; 10 stamens, corolla extended, filaments base pilose; Ovary 1, ovary wall densely with glandular scales, style longer than petals, persistent. Capsule oblong, ca. 1.2 cm long, apex dehiscent. It is flowering from May to June, fruiting from July to August.
Ecological environment: The plant grows on mountain ridges, hillsides, and acid soils under forests. It mainly distributes in the north and other areas of China.
Growth characteristics: The tree is adaptable, it is better to cultivate in acidic or neutral sandy loam or clay loam than in alkaline loam. The plant grows on mountain ridges, hillsides, and acidic soils in forests. The plant distributes in the north area and other areas of China.
Characters of herbs: Most of the leaves are rolled back into a cylinder, and some of them are shriveled and broken. After flattening, the intact leaves are oblong or obovate, 2~7.5 cm long and 1~3 cm wide, with blunt apex, the base is nearly round or wide wedge-shaped, whole edge, the upper surface is dark green to brown green, light yellowish glandular scales scattered, the under surface is grayish green, many glandular scales, main veins protruding on the under surface, there are 4~6 pairs of lateral veins. The petiole is 3~10 mm long. The leaves are nearly leathery. The leaf has a specific fragrance, tastes slightly bitter and slightly pungent. The herb which has intact leaves and dark green color is better.
Pharmacological actions: ①.Antitussive and antiasthmatic effects; ②.Anti-inflammatory and bacteriostasic activity; ③.Antihypertensive effect and diuretic effect; ④.The analgesic action; ⑤.Central inhibition effects; ⑥.Effects on tissue respiration.
Medicinal efficacy: The herb relieves cough and eliminating phlegm. It is indicated for acute and chronic bronchitis, cough.
Administration of Folium rhododendri Daurici(Mǎn Shān Hónɡ):
Administration Guide of Folium rhododendri Daurici(Mǎn Shān Hónɡ)
①.Internally:25~50 grams fresh herb,water decoction,or 6~12 grams,infused in 40% alcohol and take; ②.fresh herbs 0.5~1 liang(about 15~30 grams),water decoction; ③.15~30 grams(fresh herb), water decoction, or infusing in wine and take.
Introduction: Antitussives herbs: an agent or substance herbs that stops coughing.
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1.Introduction of Man Shan Hong:Dahurian Rhododendron Leaf or Folium rhododendri Daurici.