Dryopteris crassirhizoma, Mian Ma Guan Zhong Dryopteris crassirhizoma, Guan Zhong 贯众 Male Fern, Shield-fern Guan Zhong, Mian Ma Guan Zhong (TCM) Dryopteris crassirhizoma(Photo by Kenraiz) (Wikimedia) Dryopteris Guan Zhong(Adam, 2024) Botanical name: Dryopteris crassirhizomaA number of other species have been said to provide varieties of Guan Zhong including: Woodwardia japonica Blechnum orientale Lunathyrium acrostichoides Osmunda japonica Matteuccia struthiopteris Parts used: Rhizome Temperature & Taste: Cold, dry. Bitter. slightly Toxic Classification: S. Worms and Parasites Uses: 1. Kills Worms:-Tapeworm, Roundworm, Pinworm, Hookworm-Liver fluke, Schistosomiasis-abdominal pain associated with Worms2. Clears Wind-Heat and Toxin:-Common Cold, Flu or Epidemic disease from Wind-Heat and Toxin, with Fever, Sore Throat, aches and pains-‘treats diseases with exterior manifestation due to internal pathological condition’. (Li Shi Zhen)-useful for a wide range of Toxic Heat disorders-can help expression of rashes in Measles, Chicken Pox etc. Also to prevent infection-helps prevent infection during Cold and Flu season-Dizziness and Hypertension from Wind-Heat-Toxic Sores3. Cools the Blood, Stops Bleeding-Bleeding from Heat-Vomiting Blood, Blood in the Stool including Dysentery with Blood-especially for Uterine Bleeding and excessive Menstruation-Puerperal abdominal pain and distention (Li Shi Zhen)-the carbonised root is used for this function4. Clears Heat and Toxin, Resolves Masses:-“Dissolve hard masses in the abdomen” (Ming…

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