Identification & Quality Standard
Polygoni Multiflori Radix
Botanical Origin
The dried tubular root of Polygonum multiflorum Thunb.(Polygonaceae)
Production Regions
Primarily produced in Shaanxi, southern Gansu, and the eastern, central, southern and southwestern regions of China.
Quality Requirements
Superior medicinal material has heavy, firm texture.
Macroscopic Features
Lumps or irregular fusiform. Externally reddish-brown, wrinkled, with shallow grooves, and long transverse raised lenticels and thin scars of root. Heavy, firm texture, difficult to break. Fractured surface is pale yellowish-brown or pale reddish-brown, powdery; cortex has 4~11 abnormal vascular bundles, with a cloudy brocade pattern, central xylem is relatively large, sometimes with a woody center. faint odor; slightly bitter and sweet and astringent.
