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Alternate Chinese names: 石皮 shí pí; 石兰 shí lán; 虹霓剑草 hóng ní jiàn cǎo; 石苇 shí wěi

Kingdom: Plant

Origin in PRC Pharmacopoeia: Pyrrosia lingua (Thunb.) Farw.; Pyrrosia sheareri (Bak.) Ching; Pyrrosia petiolosa (Christ) Ching. (PRC Pharmacopoeia)

Origin in unofficial sources: Pyrrosia lingua (Thunb.) Farw.*; Pyrrosia sheareri (Bak.) Ching*; Pyrrosia petiolosa (Christ) Ching*; Pyrrosia drakeana (Franch.) Ching; Pyrrosia davidii (Gies.) Ching; Pyrrosia gralla (Gies.) Ching

Use: Medicinal

Category: Water-disinhibiting dampness-percolating agents / Urine-disinhibiting strangury-freeing agents

Properties: Bitter, sweet; slightly cold.

Channel entry: Lung and bladder channels.

Actions and indications:

• Disinhibits urine and frees strangury: Damp-heat strangury patterns, dribbling urinary block.
• Clears the lung and relieves cough: Patterns of phlegm-heat cough and panting.
• Cools the blood and stanches bleeding: Frenetic movement of blood from blood heat with vomiting of blood (blood ejection), nosebleed, or flooding and spotting.

Dosage and method: A decocted dose of 5–10g is typical, although 30–60g may be used.

Warnings: Contraindicated in yīn vacuity and in the absence of damp-heat.

Quality: Large thick leaves that have reddish backs and speckles are best.

Production area: Húběi, Sìchuān, Jiāngxī.

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