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Latin pharmacognostic name: Aspidii Rhizoma

Alternate Chinese names: 贯中 guàn zhōng; 贯锺 guàn zhōng; 贯来 guàn lái; 贯仲 guàn zhòng

Kingdom: Plant

Origin in PRC Pharmacopoeia: Dryopteris crassirhizoma Nakai; Athyrium pycnosorum Christ. [= Lunathyrium acrostichoides (Sw.) Ching]; Osmunda japonica Thunb. (PRC Pharmacopoeia)

Origin (other sources): Dryopteris crassirhizoma Nakai; Athyrium pycnosorum Christ. [= Lunathyrium acrostichoides (Sw.) Ching]; Matteuccia struthiopteris (L.) Todaro; Osmunda japonica Thunb.; Blechnum orientale L.; Brainia isignis (Hook.) J. Sm.; Woodwardia japonica (L. f.) Sm.; Dryopteris filix-mas (L.) Schott; Dryopteris peninsulae Kitag.; Polystichum squarrosum Fée; Woodwardia unigemmata (Mak.) Nakai; Woodwardia unigemmata (Mak.) Nakai; Cyrtomium fortunei J. Sm. [= Polystichum fortunei Nakai]

Use: Medicinal

Category: Worm-expelling agents

Properties: Bitter; cool.

Channel entry: Liver and stomach channels.

Indications:

• Kills worms: Intestinal worms (parasites); wind-heat common cold.
• Clears heat and resolves toxin: Warm heat maculopapular eruption; measles.
• Cools the blood and stanches bleeding: vomiting of blood (blood ejection); nosebleed (nǜ xuè); intestinal wind; bloody stool; blood dysentery; flooding and spotting; vaginal discharge.

  Dosage & Method: Oral: Decoct (10–15g); use in pills and powders. Use raw for expelling worms and for clearing heat and resolving toxin; use stir-fried for stanching bleeding.

  Warnings: Unsuitable for yīn vacuity with internal heat and spleen-stomach vacuity cold. Contraindicated in pregnancy and for children, weak patients, and peptic ulcer sufferers.

  Quality: Dry, fat, neatly shaped purplish rhizomes without roots or leaves attached are the best.

  Product Area: ānhuī, Shǎnxī (Shaanxi), and Húnán.

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