Production RegionsPrimarily produced in the Chinese provinces of Guizhou, Guangdong, Guangxi, Taiwan.
Macroscopic FeaturesLong cylindrical or half-cylindrical shape, 10~100cm long, 3~12cm diameter. Externally yellowish-red to dark red, alternating red and white thin striations, with scars of knife cuts and scars of stems, often with longitudinal cracks. Fractured surface is slightly lustrous, obvious annual rings; sometimes has pith that is dark brown and loose with bright spots. Hard texture, faint odor, slightly astringent taste.
Quality RequirementsSuperior medicinal material is firm, thick, large, yellowish-red.
PropertiesSweet, salty, neutral
FunctionsQuickens the blood, dispels stasis, eliminates swelling, relieves pain. Apply to amenorrhea due to blood stasis, painful menstruation, postpartum abdominal pain due to blood stasis, postpartum dizziness, welling-abscesses, injuries caused by falls, tetanus.
OriginThe cried heartwood of Caesalpinia sappan L.(Fabaceae)