Bark of Dictamnus dasycarpus Turcz., family Rutaceae.
reel-shaped, 5-15 cm long, 1-2 cm in diameter, 0.2-0.5 cm thick. Outer
cortex grey-white with longitudinal striae and granular spots; inner surface
nearly white. Section lamellate, small bright spots seen through the light
when the epidermis peeled off. Prepared as crosscut pieces or fine strips.
With a foul smell. Bitter in taste, cold in nature, and attributive to
spleen and stomach channels.
Clear away heat, expel wind and deprive dampness: For carbuncle and prurigo
of dampness-heat type, scabies and tinea.
1. Inhibiting the growth of pathogenic fungi.
2. Its infusion lowers vaccine-induced fever in rabbits.
3. Dictamnine, one of its active components, increases the myocardial
tone of frogs.
Decoction: 3-9g. Extemal use: Appropriate amount.