Rhizoma Polygonati (Huangjing)–Siberian Solomonseal Rhizome

Origin
Siberian Solomonseal Rhizome is the dried rhizome of Polygonatum kingianum Coll.et Hemsl., Polygonatum sibiricum Red. or Polygonatum cyrtonema Hua. According to shape, these are commonly known as ” Dahuangjing” , ” Jitouhuangjing” , and ” Jiangxinghuangjing” . The drug is collected in spring and autumn,removed from the fibrous root,washed clean,blanched in boiling water or steamed to soften, and dried.
Description and Identification
Dahuangjing: Freshy tuberculated,up to more than 10cm long, 3 ~ 6cm wide,2 ~ 3cm thick. Externallt pale yellow to yelloish-brown,with ring-shaped nodes,striatums and fibrous toot scars, the upper part od modes showing lateral stem scars orbiculate with sunken circumference and prominent in centre. Texture hard and tenacious,uneasily broken,francture horny,pale yellow to yellowish-brown. Odour, slight; taste, sweet, and viscous on chewing.
Jitouhuangjiang: Tubercles curved and cylindrical,3 ~ 10cm long,0.5 ~ 1.5cm diameter. Node 2 ~4cm long,somewhtat concial,often branched; externally yellowish-white or greyish-white, ranslucent with longitudinal wrinkles, round stem scars 5 ~ 8mm in diameter.
Jiangxinhuangjing: Elongated tubercles,varying in length,often connected in groups of several tubercles. Externally greyish-yellow or yellowish-brown, rough, bearing prominent and orbiculate stem scars on the upper part of nodes ,0.8-1.5cm in diameter.
Not to be used as a drug if it tastes bitter.
Chemical Ingredients
It has steroidal saponins such as sibiricoside A, 14 a -hydroxysibiricoside A.
Property and Channel Tropism
Property: sweet in taste, neutral in nature.
Channel tropism: spleen, lung, kidney.
Action and Indications
To reinforce qi and nourish yin, to invigorate the function of the spleen, to moisten the lung, and to benefit the kidney.
Weakness of the spleen and the stomach marked by lassitude, dryness in the mouth nad anorexia; dry cough due to deficiency of yin of then lung; deficiency of vital essence and blood; diabetes caused by internal heat.
Place of Production
Polygonatum kingianum Coll.et Hemsl.: Guangxi, Yunnan, Guizhou Province Polygonatum sibiricum Red.: Hebei, Neimenggu, shaan xi province. Polygonatum cyrtonema Hua.: Anhui, Hunan, Guizhou Province, etc.






