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 (heath 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:
(1).Rhododendron dauricum L.
Botanical description: Rhododendron dauricum L is commonly known as Xīng ān Dù Juān. Semi-evergreen shrubs, the plant grows up to 1~2 meters high. The bark is pale gray. Many-branched, branchlets are slender and curved, dark gray, scaly, and have pilose. Buds are ovate, and scales are broadly ovate. Leaves are alternate; petioles are 2~5 mm long, slightly piliferous; leaf blade is more or less coriaceous, clustered on the upper part of branchlets, elliptic or ovoid oblong, 1~7 cm long, 1~3 cm wide, the apex is obtuse, mucronate, the base is cuneate, entire, the upper surface is dark green, scattered white glandular scales, the undersurface is light green, densely covered by glandular scales. In winter, it rolls into a tubular shape and has an aroma after kneading.
1~4 flowers grow apically, bloom before leaves, pink or prunus (violet red); sepals are short, lobed, the out surface is densely scaly; the corolla is funnelform, about 1.8 cm long, 5-lobed, the out surface is pilose; 10 stamens, the corolla is protruding; the filament base is pilose; 1 ovary, ovary wall is densely covered with glandular scales, style is longer than petals, persistent.
Capsularfruit is oblong, about 1.2 cm long, and the apex is cracked. Its flowering period is from May to June, and the fruiting period is from July to August.
Ecological environment: The plant grows on mountain ridges, hillsides, and in acid soils under forests. It is mainly distributed in the northern and middle north area, and other areas of China.
Growth characteristics: The shrub is adaptable, it is better to cultivate in acidic or neutral sandy loam or clay loam. It is better not to choose alkaline loam for cultivation.
Characters of herbs: Most of the leaves are retroflexed to a tubular shape, and some of them are shriveled and broken. After flattening, the intact leaves are oblong or long obovate, 2~7.5 cm long, and 1~3 cm wide, the apex is obtuse, the base is orbicular or broadly cuneate, entire, the upper surface is dark green to brown-green, light yellowish glandular scales are scattered, the undersurface is celadon (sage green), many glandular scales, main veins protruding on the undersurface, there are 4~6 pairs of lateral veins. The petioles are 3~10 mm long. The leaves are nearly coriaceous. The leaf has a specific fragrance and tastes slightly bitter and pungent. The herb of a better grade has intact leaves and is dark green.
Pharmacological actions: ①.Antitussive and antiasthmatic effects; ②.Anti-inflammatory and bacteriostasic activity; ③.Antihypertensive effect and diuretic effect; ④.analgesic action; etc.
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):
Reference:
Administration Guide of Folium rhododendri Daurici (Mǎn Shān Hónɡ)
TCM Books:
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.
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1.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.
Botanical description: Rhododendron dauricum L is commonly known as Xīng ān Dù Juān. Semi-evergreen shrubs, the plant grows up to 1~2 meters high. The bark is pale gray. Many-branched, branchlets are slender and curved, dark gray, scaly, and have pilose. Buds are ovate, and scales are broadly ovate. Leaves are alternate; petioles are 2~5 mm long, slightly piliferous; leaf blade is more or less coriaceous, clustered on the upper part of branchlets, elliptic or ovoid oblong, 1~7 cm long, 1~3 cm wide, the apex is obtuse, mucronate, the base is cuneate, entire, the upper surface is dark green, scattered white glandular scales, the undersurface is light green, densely covered by glandular scales. In winter, it rolls into a tubular shape and has an aroma after kneading.
Ecological environment: The plant grows on mountain ridges, hillsides, and in acid soils under forests. It is mainly distributed in the northern and middle north area, and other areas of China.
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