Folium Pyrrosiae

 

Source
leaf of Pyrrosia lingua (Thunb.) Farwell, P. sheareri (Bak.) Ching, and P petfolosa (Christ) Ching, family Polypodiaceae.

Characteristics
P. lingua: leaf solitary, lanceolate, base cuneate and symmetrical, dorsal surface covered by grey stellate hairs, sporangia arranged regularly along the lateral veins; petiole slender. P sheareri: leaf base auriform and oblique, dorsal surface covered by red stellate hairs, margin usually involute. P. petiolosa: leaf oblong, but usually curved in cylindrical shape, dorsal surface red brown, densely covered by sporangia. All are bitter and sweet in taste, slightly cold in nature, and attributive to lung and urinary bladder channels.

Indication
1. Promote diuresis and relieve urinary stranguria: For stranguria of heat type and caused by urinary stone, and edema.
2. Clear away lung-heat, eliminate phlegm, relieve cough and asthma: For productive cough due to lung-heat (P lingua and P. petiolosa), and bronchial asthma (P. petiolosa).
3. Cool the blood and stop bleeding: For hemoptysis and hematuria. Recently also used for acute and chronic dysentery and leukopenia.

Pharmacological Action
1. Its active components, isomangiferin and fumaric acid, are antitussives and expectorants.
2. Effective for cyclophosphamide-induced leukopenia in mice.

Administration Decoction: 10-30g; 50-100g for single use.


   

Please feel free to contact
Mr. Wang Tao

E-mail:
herb@damo-qigong.net
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