Rock bean

Rock bean

(commonly used Chinese herbal medicine in Sichuan)

[source] it is the root, stem and leaf of the leguminous plant.

[plant morphology] Polygonum cuspidatum

Small shrubs, up to 50 cm tall. Young branches densely covered with brown hairs. Leaf blade narrowly oblong, 4-7 cm long, apex acute, base cuneate, pubescent on both sides, margin entire, densely covered with black purulent spots below; petiole densely hairy; stipules caducous. Cymes small, each cyme concealed in a bract; scalelike bracts 2-row, apical microsomes, both sides hairy, purple; sepals ovate, the lowest one several as long as the other 4. Pod, oblong elliptic, brown, densely hairy. The flowering period is April. The fruit period is from October to December.

Born in the wet valley, river beach. It is distributed in Sichuan. Yunnan and other places.

[collection] it can be harvested all year round and dried in the sun.

[nature and taste] it is warm in nature, slightly bitter and pungent in taste.

[function indications] blood circulation, dehumidification. Treatment of rheumatoid arthritis pain, body deficiency leucorrhea, chronic appendicitis.

[usage and dosage] oral administration: decoction, 0.5-1 Liang.

Chinese PinYin : Yan Dou