Introduction of Shi Chang Pu:Grass-leaved Sweetflag Rhizome or Rhizoma Acori Tatarinowii.

TCM Herbalism:Medicinals and Classifications. ✵The article gives records of the herb Grass-leaved Sweetflag Rhizome, its English name, Latin name, property and flavor, its botanical source one plant species, ①.Acorus tatarinowii Schott., 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 Grass-leaved Sweetflag Rhizome, its pharmacological actions, medicinal efficacy, and administration guide.

Rhizoma Acori Tatarinowii(Grass-leaved Sweetflag Rhizome).

dried herb segments of Rhizoma Acori Tatarinowii Pin Yin Name: Shí Chānɡ Pú.
 English Name: Grass-leaved Sweetflag Rhizome.
 Latin Name: Rhizoma Acori Tatarinowii.
 Property and flavor: warm, pungent, bitter.

 Brief introduction: The Herb Rhizoma Acori Tatarinowii is the dried rhizomes of Acorus tatarinowii Schott., used (1).as an aromatic stimulant for treating impaired consciousness, insanity and epilepsy, and (2).to resolve dampness and harmonize the stomach for treating the accumulation of dampness in the middle with anorexia, epigastric stuffiness, and abdominal distension. The herb is commonly known as Rhizoma Acori Tatarinowii, Grass-leaved Sweetflag Rhizome, Grassleaf Sweelflag Rhizome, Rhizome of Grassleaf Sweelflag, Shí Chānɡ Pú.

 Botanical source: Common herbal classics and other famous herbal classics defined the herb Rhizoma Acori Tatarinowii (Grass-leaved Sweetflag Rhizome) as the dried rhizomes of the species (1). Acorus tatarinowii Schott. It is a plant of the Acorus L. genus, the Araceae family (aroid, arum family) of the Arales order. This commonly used species is introduced:

(1).Acorus tatarinowii Schott.

 a colorful drawing of Acorus tatarinowii Schott plant parts Botanical description: The plant, Acorus tatarinowii Schott is commonly known as Shí Chāng Pú. A perennial herb. The rhizome is decumbent, aromatic, 2~5 mm thick or up to 5~8 mm thick, the outer bark is tawny (yellow brown); the internode length is 3~5 mm, the root is succulent, has many fibrous roots; the upper part of the rhizome is densely branched, thus the plant grows tufty, branches are often covered with fibriform persistent leaf bases. Leaves are sessile, leaf blades are thin, linear (filate), 20~30 cm long, or up to 50 cm long, the base is folded, the part above the middle is explanate, 7~13 mm wide, the apex is attenuated, both sides of the base are membraneous, leaf sheath is up to 5 mm wide, extends upward and nearly reaches to the middle of the leaf blade, is dark green, has no mid-vein, many parallel veins, and is slightly protuberant.

 flowering plant of Acorus tatarinowii Schott. The common peduncle is axillary, 4~15 cm long, and trigonous. The leaflike spathe is 13~25 cm long, 2~5 times the length of the spadix, or longer, rarely nearly equal length; the spadix is terete (cylindrical), 2.5~8.5 cm long, 4~7 mm thick; the upper part is acuminate, upright, or slightly curved. The flowers are white.

 Mature fruit ear is 7~8 cm long, and up to 1 cm in diameter. Young fruit is green and turns yellow-green or yellow-white at maturity. Its flowering and fruiting periods are from February to June.

 plants of Acorus tatarinowii Schott grow in rivulet Ecological Environment: The plant is fond of a wet and gloomy environment and grows in wetlands and marshes in thick forests, or on stones near mountain streams. The plant is mainly distributed in the southern areas of the Yellow River.

 Growth characteristics: The plant prefers cold, cool, and moist climates; shady and humid environments; cold resistance; and avoiding drought. It is appropriate to choose wetland and marsh, fields with irrigation convenience, sandy loam, or humus-rich loam for cultivation.

 dried herb slices of Grass-leaved Sweetflag Rhizome Characters of herbs: The herb rhizome is a flat cylinder (flat cylindrical), slightly curved, and often branched, 3~20 cm long and 0.3~1 cm in diameter. The surface is tan (chocolate brown), red-brown, or sallow (grayish yellow), coarse and rough, with many nodes and joints, the internode length is 2~8 mm; there are slightly flat triangular leaf marks on the upper side, alternately arranged from left to right, there are dot-shaped root marks on the lower side, and sometimes there are tricholic leaf bases remaining on the nodes. The texture of the herb is hard and crisp, and the fracture surface is fibrous, off-white, or reddish (faint red); In the cross-section, the endothelial ring of the fracture surface is conspicuous, and many vascular bundles and brown oil spots are visible. The herb has an aromatic fragrance, it tastes bitter and slightly pungent. The herb of a better grade has thick strips, the fracture surface is off-white, and it has a strong fragrance.

 fresh rhizome and plants of Acorus tatarinowii Schott. Pharmacological actions: ①.anticonvulsive effect; ②.analgesic effect; ③.tranquilizing effect and soothe the nerves; ④.promote learning and memory, improve memory impairment; ⑤.improve brain norepinephrine and cholinergic nerve function and adjust the level of serotonin in the brain; ⑥.cooling effect; ⑦.spasmolysis; ⑧.antitumor, etc.

 Medicinal efficacy: Inducing resuscitation, reduce phlegm, the intelligence benefit, regulate Qi, promote blood circulation, disperse wind, eliminate dampness, promoting the circulation of Qi, resolving dampness and boost appetite, dispelling wind and arthralgia, relieve swelling and relieve pain. It is indicated for coma and epilepsy (unconsciousness and epilepsy), amnesia (forgettery, poor memory), insomnia (lose sleep), coma of pyrexia (unconsciousness of fever), upset and worry, epilepsy, phlegm syncope, deafness with qi stagnation, tinnitus, deafness, stomachache, abdominal pain, epigastric distended pain, stuffiness and chest congestion, silence, silence with dysentery, wind-cold-dampness arthralgia, carbuncle-abscess and pyogenic infections, scabies, traumatic injury, etc.

 Administration of Rhizoma Acori Tatarinowii (Shí Chānɡ Pú): 
Reference: Administration Guide of Rhizoma Acori Tatarinowii (Shí Chānɡ Pú)
TCM Books: ①.Internally: 3~10 grams;②.Internally:water decoction, 1~2 qian (about 3~6 grams), fresh herb 3~8 qian (about 9~24 grams);or prepare to pill, powder. Externally:wash with water decoction, or prepare to ground herb powder and apply stick; ③.Internally:water decoction,3~6 grams, fresh herb double dosage (about 6~12 grams), or prepared to pill, powder. Externally:proper amount, wash with water decoction, or prepare to ground herb powder and apply stick.
 Contraindications,Precautions and Adverse Reactions: the herb Rhizoma Acori Tatarinowii should not be combined with all-grass of Canton sonerila, Ma Huang. The herb should not be taken with cerealose(malt sugar), mutton. The herb should not be prepared with ironware.




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