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Osmunda japonica Thunb.
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English Name |
Royal-fern, Japanese Flowering Fern |
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Latin name |
Osmunda japonica Thunb. |
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Family & Genus |
Osmundaceae, Osmunda |
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Description |
Perennial herbs, 30-100cm tall. Rhizomes stout, recumbent or obliquely climbing, no scales. Leaves dimorphic, with dense floss when young; foliage leaves with long petioles, blades triangular broadly oval, 30-50cm long, 25-40cm wide, bipinnate below the top, pinnules oblong or oblong-lanceolate, apex blunt or pointed, base round or broadly cuneate, margin with uniformly dense, fine and blunt serrae. Sporophyll strongly contracted, pinnules bar-shaped, 1.5-2cm long, dense sporangia along both sides of main veins, forming grown and dark brown sporangiate spike, withers after ripening. |
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Distribution |
Growing in forests, mountain foot, or acid soil along the streams. Distributed in Gansu, Shandong, Jiangsu, Anhui, Zhejiang, Jiangxi, Fujian, Henan, Hubei, Hunan, Guangdong, Sichuan, Guizhou, Yunnan and etc. The medicinal materials are mainly produced in Henan, Gansu, Shandong, Anhui and etc. |
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Part Used |
Medical part: young sprout or wool on the tender petiole, rhizome and petiole residue. Chinese name: young sprout or wool on the tender petiole: Ziqimiao. Rhizome and petiole residue: Ziqiguanzhong. |
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Harvest & Processing |
Tender sprout or wool on tender petiole: collected in spring, well washed, used fresh or sundried. Rhizome and petiole residue: excavated rhizome in spring and autumn, removed petiole, fibrous root, well washed, sun-dried or used fresh. |
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Chemistry |
Rhizome contains dryocrassin, (4R,5S)-osmundalactone, (4R,5S)-5-hydroxy-2-hexen-4-olide, (4R,5S)-5-hydroxyhexan-4-olide, 5-hydroxy methyl-2-furfural, glycerin, succinic acid, ecdysterone and ecdysone, etc. |
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Pharmacology |
Parasite-expelling, anti-viral and anti-blood-coagulation. |
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Properties & Actions |
Tender plant or lanate in the young petiole: bitter, little cold. Root stem and petiole remain: bitter, little cold, mild-toxic.Young sprout or wools on the tender petiole: arresting bleeding. Rhizome and petiole residue: clearing heat, detoxifying, dissipating stasis, arresting bleeding and killing parasites. |
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Indications & Usage |
Villi of tender seedling or tender leafstalk: hemorrhage caused by trauma. Rhizome and leafstalk residue: influenza, epidemic meningitis, Japanese B encephalitis, parotitis, anthracia and swelling toxicity, measles, chicken pox, dysentery, hematemesis, non-traumatic hemorrhage, hemafecia, metrorrhagia and metrostaxis, leukorrhea, pinworm, tapeworm, intestinal parasitosis such as ancylostoma.Tender sprouts or lanate on young petiole: external application: appropriate amount, fresh herb triturated for application; or powdered dry material for application. Rhizome and petiole residue: oral administration: decocting, 3-15g; or extracted juice; or made as pills or powders. External application: appropriate amount, fresh herb triturated for application. |
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Examples |
1. Prevent and treat encephalitis: royal-fern root 15-30g, dyers woad leaf 15g. Decoct in water and swallow.
2. Measles, chicken pox not erupted sufficiently: basket fern 3g, red peony root 6g, skunk bugbane 3g, reed root 9g, decoct in water and swallow. |
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Permanent URL：https://sys01.lib.hkbu.edu.hk/cmed/mpid/detail.php?herb_id=D00811 |
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