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當歸 Danggui
Chinese Name |
當歸 |
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Chinese Pinyin |
Danggui |
English Name |
Chinese Angelica |
Latin Pharmaceutical Name |
Angelicae Sinensis Radix |
Category |
Roots and rhizomes
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Origin |
The dried root of Angelica sinensis (Oliv.) Diels (Apiaceae). |
Production Regions |
Primarily produced in the Chinese provinces of Gansu, Yunnan, Qinghai. |
Macroscopic Features |
Whole material is long and slightly cylindrical, lower portion has 3~5 or more branched roots, 15~25cm. Outer skin is thin and dense; externally yellowish-brown or brown, with longitudinal wrinkles and horizontal long lenticels. Head (Gui tou) has 1.5~4cm diameter, with striations, upper apex is round and blunt, with purple or yellowish-green remnants of stem and leaf sheaths. Main root (Gui shen) is thick, short and externally uneven; branched root (Gui wei) is 0.3~1cm diameter, thick upper part and thin lower part, curved, with small number off rootlets. Soft and pliable texture; fractured surface is yellowish-white or pale yellowish-brown; cortex is thick with cracks and numerous brown spotted secretory cavities; xylem is relatively pale, cambium ring is yellowish-brown. The fractured surface of some rhizomes has pith and a hollow cavity at the center. |
Quality Requirements |
Superior medicinal material has thick and long main root, oily and moist, with yellowish-brown outer skin; full and fleshy with a potent aromatic odor. |
Properties |
Sweet, acrid; warm. |
Functions |
Supplements the blood, invigorates the blood, regulates menstruation, relieves pain, moistens the intestines, frees the stool. Apply to chlorosis due to hemopenia, vertigo and palpitation, irregular menstrual periods, amenorrhea and painful menstruation, deficiency cold abdominalgia, constipation induced by dryness of the intestine, rheumatic arthralgia, injuries from falls, superficial infection and burns and scalds. |
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Permanent URL:https://sys01.lib.hkbu.edu.hk/cmed/mmid/detail.php?pid=B00049
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