Convolvulus tinctorius

Convolvulus tinctorius

(Ningxia Chinese herbal medicine manual)

[synonyms] lalayuan and yeyuanniu (Ningxia Manual of Chinese herbal medicine), Che man and Qu jieteng (medicinal plants in desert areas of China).

[source] the whole plant and flower of Convolvulaceae.

[plant morphology] Convolvulus

Perennial twining herbs. Leaves alternate, ovate oblong or triangular ovate, less than twice as wide, apex slightly rounded, base subhalberd or sagittate, entire or microwavy. 1-2 flowers in leaf axils, slender pedicel; bracts 2, linear; corolla pale red, funnel-shaped, with 5 inconspicuous lobes. Capsule globose. The flowering period is from June to August.

Born in the field and village grass. Distributed in Northeast, northwest and other places.

[collection] the whole grass was collected in summer and autumn for fresh use. In summer, the flowers are picked and dried in the shade. The roots are picked in autumn and dried in the sun.

[chemical composition] the underground part contains caffeic acid. The aerial part contains quercetin, kaempferol and caffeic acid. Each part contains β - methyl chestnut bark. It also contains resin and alkaloid.

[nature and taste] medicinal plants in desert areas of China: "slightly salty, warm and poisonous. "

Functions and indications: dispelling wind, relieving itching and relieving pain.

[formula selection] ① treatment of neurodermatitis: appropriate amount of fresh lalayuan whole herb; soaking in 70% alcohol for one day and night, wiping twice a day.

② Treatment of toothache: three parts of fresh Lala aster and one part of pepper. Mix well, plug the cavity or bite the diseased tooth tightly, do not swallow. (the function and indications are listed in the Handbook of Ningxia Chinese herbal medicine)

③ Treatment of rheumatoid arthritis: Tian Xuanhua root three money, water decoction. (medicinal plants in desert areas of China)