Bletillae Rhizoma (白及) is the dried tuber of Bletilla striata (Thunb.) Reichb. f., family Orchidaceae.
Baiji (Chinese name), Common Bletilla Tuber
Irregularly oblate, mostly with 2-3 claw-like branches. External greyish-white or yellowish-white, possessing several concentric rings and brown dotted rootlet scars, with raised stem scars at the upper part and a trace jointing to another tuber at thelower part. Texture hard and uneasily broken, fracture whitish and horny. Odor, slight; taste, bitter and viscous on chewing.
Important cultivation area
Guizhou, Sichuan, Yunnan, Hubei and Jiangxi provinces.
Wash clean, soften thoroughly, cut into thin slices, and dried in the sun.
Traditional Chinese Medicine action
Bitter, sweet and astringent; slightly cold. Enter lung, liver and stomach channels. Astringe and stanch bleeding, relieve swelling and promotetissue regeneration.
Usage and dosage
6-15 g, decoction for oral use; 3-6 g, ground into powder for oral administration. Appropriate amounts for external use.
* Contraindication and precaution *
Incompatible with Chuanwu, Zhichuanwu, Caowu, Zhicaowu and Fuzi.
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