Materia Medica - Important
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Pharmaceutical Name
Rhizoma Dryopteris crassirhizomae
Botanical Name
1. Dryopteris crassirhixoma Nakai : 2. Osmunda japonica Thunb. 3. Woodwardia unigemmata (Makino) Nakai
Common Name
Dryopteris rhizome, Basket fern
Source of Earliest Record
Shennong Bencao Jing
Part Used & Method for Pharmaceutical Preparations
The rhizomes are dug in winter. After the fibrous roots have been removed, the rhizomes are dried in the sun and cut into slices. The herb can be used either raw or carbonized.
Properties & Taste
Bitter and slightly cold
Meridians
Liver and spleen
Functions
1. To kill parasites : 2. To clear heat and release toxins : 3. To stop bleeding
Indications & Combinations
1. Parasites in the intestines: a) hookwormBasket fern (Guanzhong) is used with Torrya seed (Feizi) and Areca seed (Binglang) : b) tapewormBasket fern (Guanzhong) is used with Omphalia (Leiwan) and Areca seed (Binglang) : c) pinwormBasket fern (Guanzhong) is used with Chinaberry bark (Kulianpi) and Carpesium fruit (Heshi).
2. Wind-heat common cold, warm-heat maculopapule and acute parotitis. Basket fern (Guanzhong) is used with Honeysuckle flower (Jinyinhua), Forsythia fruit (Lianqiao), Isatis leaf (Daqingye) and Isatis root (Banlangen).
3. Extravasation of blood by heat manifested as vomiting of blood, epistaxis, bloody stool and functional uterine bleeding. Basket fern (Guanzhong) is used with Biota tops (Cebaiye), Agrimony (Xianhecao) and Carbonized petiole of windmill palm (Zonglutan).
Dosage
10-15 g
Cautions & Contraindications
The carbonized herb is used to stop bleeding.
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