Ash Bark

Primarily produced in northeastern China.

Twig bark: Curled or grooved shape, 10~60cm long, 1.5~3mm thick. Outer surface is grayish-white, grayish-brown to black-brown or spotted, flat or slightly rough, with grayish-white spotted lenticels and thin oblique wrinkles, sometimes with scars of branches; inner surface is yellowish-white or brown, smooth. Hard and brittle texture, fractured surface is fibrous, yellowish-white. faint odor, bitter taste. Tree bark: long strip or lumps, 3~6mm thick. Outer surface is grayish-brown, with reddish-brown round or horizontal long lenticels and cracked grooves. Hard texture, fractured surface is relatively more fibrous.

Superior medicinal material is long, with thin outer skin and smooth

Bitter, cold

Clears heat, dries dampness, clears liver, brightens eyes, astringes and stops diarrhea, stops vaginal discharge. Apply to diarrhea due to heat toxin, vaginal discharge and itching, swelling pain induced by conjunctival congestion due to liver heat, conjunctival congestion.