Oxytropis falcata Bunge
Oxytropis falcata Bunge (O. falcata) is a 1-35 cm high perennial clustered herb, also known as edaxia, has viscosity and a special smell, and is mainly distributed on hillsides, sand dunes, river valleys, broad mountain valleys, river floodplain meadows, alpine meadows, and under spruce forests on shady slopes at elevations of 2700-4300 meters; in Tibet, it is commonly found in alpine shrub grasslands, hillslope grasslands, hillslope gravel grounds, glacial terraces, and riverbank terraces at elevations of 4500-5200 meters, sometimes forming community distributions.
The root of O. falcata has a diameter of 6 mm, is straight and deep, dark red and its stems are shortened, woody and multibranched. O. falcata has heat-clearing, detoxification, analgesic, anti-inflammatory, antibacterial, hemostatic and antitumor activities. Furthermore, O. falcata has excellent anti-inflammatory and analgesic effects, and it is one of the three major anti-inflammatory drugs in Tibetan medicine, known as "the king of herbs". Total flavonoids of Oxytropis falcata Bunge (FOFB) were previously extracted, and their pharmacological activities are consistent with those of the whole herb.