1. Aliases

Wild Gentiana macrophylla, Paranunu (Tibetan), Daba (Tibetan), Dabuba (Tibetan).
2. Plant morphology
Duyiwei is a perennial dwarf herb, with a height of 2.5-10 centimeters. The roots and rhizomes are upright, thick, and wrinkled. No stem. Single leaf basal, 4 (to 6), rhombic or renal shaped, thick in texture, with rounded teeth at the edge, wrinkled on the upper surface, densely covered with white hairs, sparse pubescence on the lower surface veins, shallow heart-shaped at the base, or wide wedge-shaped at the lower edge, serrated at the edge, blunt or acute at the top, and 3 pairs of lateral veins near the base. The inflorescence is 3.5-7 centimeters long, with densely covered hairs on the inflorescence axis. The bracts are lanceolate, oblanceolate or linear, 1-4 centimeters long. The upper bracts are gradually smaller, with the lower edge of the base and the entire edge. The top is gradually pointed, with eyelashes. The bracts are about 8 millimeters long, and the calyx is purple brown when dried. There are hairs on the veins, and the calyx teeth are wide triangular. The top has spikes about 2 millimeters long. Corolla purple, reddish purple or approximately brown. The flowering period is from June to July, and the fruiting period is from August to September.
3. Origin distribution
Uniquely growing in high intensity weathered gravel beaches or alpine grasslands at an altitude of 2700-4900 meters. It is mainly produced in Gansu, Qinghai, Sichuan, Xizang and Yunnan.
4. Harvesting and processing
Harvest, wash, and sun dry during the autumn flowering and fruiting period.
5. Characteristics of medicinal herbs
The leaves of the unique medicinal herb are arranged in a lotus shaped alternating pair, curled, and flattened to form a fan-shaped or triangular oval shape, measuring 4-12 centimeters in length and 5-15 centimeters in width; The apex is blunt or circular, the base is shallow heart-shaped or extends downwards into a wide wedge-shaped shape, and the edge has circular teeth; The upper surface is green brown, and the lower surface is gray green; Veins fan-shaped, small veins reticulate, protruding; The petiole is flat and wide. The fruiting sequence is slightly tower shaped or short conical, with a length of 3-6 centimeters; Calyx brown, tubular bell shaped, with 5 edges, calyx teeth 5, apex with long spines. Small nuts are inverted egg shaped and triangular in shape. Mild Qi, slightly astringent and bitter taste.
6. Nature, taste, and meridian tropism
Mild in nature, sweet and bitter in taste. Guigan Meridian.
7. Effect and function
Promote blood circulation and stop bleeding, dispel wind and relieve pain. Blood activating and pain relieving drugs belonging to the subcategory of blood activating and stasis removing drugs.
8. Clinical applications
Dosage 2-3 grams, decoct and take; Or soak in wine; Or as a powder. Used to treat injuries caused by falls, injuries, bleeding, rheumatism, and jaundice.
9. Pharmacological research
1. Duyiwei saponin 500mg/(kg · day) and Duyiwei alcohol extract 300mg/(kg · day) or 150mg/kg were intraperitoneally injected into tumor bearing mice for 10 consecutive days, showing a significant inhibitory effect on transplanted tumor EC, and saponins also showed a significant inhibitory effect on Hep solid tumor formation. 2. Duyiwei extract 10% was orally administered to mice at 0.28 milliliters/10g and 0.14 milliliters/10g, which had a significant analgesic effect and lasted for about 2 hours. In the tail vein hemostasis experiment of mice, 0.14 milliliters/10 grams of 10% and 5% extracts each were given to the stomach of mice, which had a significant hemostatic effect. 4. The unique extract has antibacterial effects on beta hemolytic streptococcus and aerogenic bacteria in the filter paper method.
10. Chemical composition
Leaves contain luteolin, luteolin-7-O-glucoside, quercetin, quercetin-3-O-arabinose, quercetin, quercetin-3-O-arabinose, apigenin-7-O-neohesperidin. The above ground parts contain methyl jasminoside, 8-O-acetyl methyl jasminoside, and sesame glycosides.
11. Taboos for use
No blood stasis and should not be taken by pregnant women.
The content of the article is for clinical reference only. Non professionals in traditional Chinese medicine are not allowed to try medication.