Production RegionsPrimarily produced in the Chinese provinces of Hubei, Sichuan, Jiangxi, Henan.
Macroscopic FeaturesStem is cylindrical, slightly curved, often cut into 30cm segments, 1~3cm diameter. Externally brown or grayish-brown, rough, with shallow longitudinal grooves and obvious horizontal cracks, sometimes with enlarged nodes and slightly indented scars of twig and leaf stem; cork often scaly and falls off, leaving an obvious dark red color where it falls off. Firm and pliable texture, flexible, fractured surface is splintery; smooth transverse section, xylem is yellowish-white, ducts are thin holes, rays are brownish-red and radially arranged. Distinctive aromatic odor; tasteless and slightly astringent taste.
Quality RequirementsSuperior medicinal material has even pieces and thick stems.
PropertiesBitter; neutral
FunctionsDefeat toxin, eliminates carbuncle, boosts blood, vents channels, disperses wind, kills worm. Apply to acute and chronic appendicitis, wind-damp impediment, red diarrhea, bloody stranguria, irregular menstruation, anemia, pain due to worm, traumatic injury.
OriginThe dried vine of Sargentodoxa cuneata (Oliv.) Rehd. et Wils.(Lardizabalaceae).