Introduction of Yun Xiang Cao:Lemongrass or Herba Cymbopogonis.

TCM Herbalism:Medicinals and Classifications. ✵The article gives records of the herb Lemongrass, its English name, Latin name, property and flavor, its botanical source one plant species, ①.Cymbopogon citratus(DC.) Stapf., 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 Lemongrass, its pharmacological actions, medicinal efficacy, and administration guide.

Herba Cymbopogonis(Lemongrass).

Lemongrass:plant and fresh herb Pin Yin Name: Yún Xiāng Cǎo.
 English Name: Lemongrass,Remote Lemongrass Herb,Herb of Remote Lemongrass.
 Latin Name: Herba Cymbopogonis.
 Property and flavor: warm, pungent, bitter.

 Brief introduction: The Herb Herba Cymbopogonis is the dried aerial part of Cymbopogon distans(Nees) A. Camus (family Gramineae), used to relieve cough and dyspnea. The herb is commonly known as Yún Xiāng Cǎo.

 Botanical source: The herb Herba Cymbopogonis(Lemongrass) is the dried aerial part of Cymbopogon citratus(DC.) Stapf., it is a plant of the Cymbopogon genus, the Poaceae (Gramineae or true grasses) family of the Poales order.

(1).Cymbopogon citratus(DC.) Stapf.


 Cymbopogon citratus DC.Stapf.:growing plant Botanical description: The Cymbopogon citratus(DC.) Stapf., is a plant of the Gramineae family and Cymbopogon genus, it is commonly known as "Lemongrass, Andropogon citratus, Guatemala lemongrass, Madagascar lemongrass, lemon grass or oil grass", or "Xiang Mao", perennial herbs. Culm thick, up to 2 meters. It has the smell of lemon. The leaves are 1 meter long and 15 mm wide, both sides are gray-white and rough. Buddha flame bracts lanceolate, narrow, 1.5~2 cm long, red or yellowish brown, 3 to 5 times longer than common stem; Inflorescences linear to oblong, evacuated, branching triply, base discontinuous, branches thin and declinate or slightly curved to arch. First branch with 5 to 7 nodes, second or third branch with 2 to 3 nodes and pure.

 Raceme twin, 1.5~2 cm long, with 4 nodes; Cob internodes 2~3 mm long, slightly pubescent, but not shaded by spikelets, sessile spikelets are amphiculate, unawned, sharp. The apex of the first glume is provided with 2 micro teeth, the ridge is provided with a narrow wing, and the back is slightly concave and depressed in the lower part. No veins between ridges, the apex of 2nd lemma shallowly lobed, with short pointed, unawned, sessile spikelets are dark purple.

 Growth characteristics: The plant grows on a hillside meadow. It mainly distributes in the southwest and northwest area of China. It is suitable for growing in warmer climates, preferably on slopes with good drainage.

 Lemongrass:herb photo Characters of herbs: The whole herb is 40~110 cm long, with clumps of stems, thin and fragile, grayish green to dark green in appearance, sometimes purple, nodes are swollen. The leaf blade is narrowly strip-shaped, 25~70 cm long and 1-6 mm wide, with edges sometimes rolled out, glabrous on both sides, covered with white powder; The leaf sheath is glabrous, the base is often broken and rolled in, and the inner surface is light red; The tongue is blunt and round, 2~4 mm long, membranous, and the apex is irregularly broken. The herb has a special aroma, it tastes spicy and pungent, and a cool tingling sensation when chewing. The herb which is gray-green, thick and strong, leafy and with strong fragrance is better.

 Pharmacological actions: ①.antiasthmatic effect; ②.antitussive effect; ③.antibacterial effect.

 Medicinal efficacy: Relieve the exterior syndrome, remove dampness through diuresis, relieve cough and calm asthma. Indicated for anemofrigid cold, sunstroke or summer affection, vomit diarrhea and abdominal pain, drenching pain in urination, rheumatism and pain or numbness, cough and panting.

 Administration of Herba Cymbopogonis(Yún Xiāng Cǎo): 
 
Reference: Administration Guide of Herba Cymbopogonis(Yún Xiāng Cǎo)
TCM Books: ①.Internally:water decoction, 3~5 qian(about 9~15 grams),big dosage 1~2 liang(about 30~60 grams),infusing in wine,Externally:fumigate wash with water decoction;②.Internally:water decoction, 9~15 grams,big dosage could be 30~60 grams, or infusing in wine,Externally:proper amount, mashed and apply stick, or fumigate wash with water decoction.

 
Antiasthmatics Herbs.

 Introduction: Antiasthmatics: an agent or substance herbs that relieves cough and asthma(or dyspnea), usually by ventilating, clearing or moistening the lung, or directing lung Qi downward, stringing lung Qi or resolving phlegm.
 
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  • 1.Introduction of Yun Xiang Cao:Lemongrass or Herba Cymbopogonis.

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