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大青葉 Daqingye
Chinese Name |
大青葉 |
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Chinese Pinyin |
Daqingye |
English Name |
Indigowoad Leaf |
Latin Pharmaceutical Name |
Isatidis Folium |
Category |
Leaves
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Origin |
The dried leaves of Isatis indigotica Fort. (Brassicaceae). |
Production Regions |
Primarily produced in the Chinese provinces of Jiangsu, Anhui, Hebei, Shaanxi. |
Macroscopic Features |
Wrinkled into lumps, sometimes mashed, grayish-green or yellowish-brown. Intact leaf is long elliptical to oval-oblanceolate, 4~11cm long, 1~3cm wide, entire leaf margin or slightly waved; apex is blunt and round, base is gradually narrowed to the petiole, appearing wing-like, some with raised spots on the upper surface and obvious middle vein on the lower surface. Leaf stem is 5~7cm long, ventral surface is slightly indented. Brittle and easily broken texture; faint odor; slightly bitter taste. |
Quality Requirements |
Superior medicinal material has large leaves without leaf stem, dark grayish-green. |
Properties |
Bitter; cold. |
Functions |
Clear heat, resolves toxin, cools blood, stops bleeding. Apply to pyrexia and dipsesis due to pyreticosis, flu, acute infectious hepatitis, bacillary diarrhea, acute gastroenteritis, acute pneumonia, erysipelas, hematemesis, non-traumatic hemorrhage, jaundice, dysentery, throat impediment, sore mouth, ulcer and swollen toxin. |
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Permanent URL:https://sys01.lib.hkbu.edu.hk/cmed/mmid/detail.php?pid=B00325
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