The Chinese herb "Rudi Wugong", also known as "Wugongcao", "Shuiyugong", "Daodi Wugong", "Wugongcao", "Daqilin", "Didi Wugong", "Guolu Wugong", etc., is the rhizome of the plant "Qizhi Jue" in the Polypodiaceae family. It is often found near streams, ditches, or wetlands in forests. It has multiple effects such as clearing heat and resolving phlegm, and detoxifying snake venom.
Rudi Wugong is a perennial herbaceous plant with a height of 30-50cm. The rhizome is creeping and horizontally spread, purplish-red on the outside and white on the inside, with numerous fleshy coarse roots (resembling a centipede, hence the name).
The leaf stalk is 20-30cm long and brownish-brown. The nutritive leaves are palmate and bird-foot-shaped, herbaceous, hairless, usually trifurcate, 15-25cm long and 20-25cm wide. Each fork consists of a terminal lamina and 12 pairs of lateral laminae. The basal lamina has a short stalk, the central lamina is elliptical to lanceolate, pointed at the tip, wedge-shaped at the base, with wavy small serrations or nearly entire margins, prominent main veins, separate leaf veins, 1-2 bifurcations.
The sporangial spikes are solitary, growing from the base of the leaves, with brownish-brown stems and green spikes. The sporangial capsules are arranged in a circle on the receptacle, forming slender cylindrical shapes with uneven cock's comb-like protrusions at the top.
Rudi Wugong's morphological features: a perennial herbaceous plant. Creeping stems, purplish-red, rhizomes nearly cylindrical, horizontally growing with obvious nodes, roots growing on the nodes, slender and long stems. The leaves are linear, soft and smooth green leaves. It blooms pale green or white flowers in summer and autumn, with terminal inflorescences in spherical shape, and three narrow leaf-like bracts, hence also known as "Sanjiaocao".
1. Cough and asthma: 9g of Rudi Wugong, 3g of licorice, decocted in water and taken orally.
2. Sprains and internal injuries: Take an appropriate amount of Rudi Wugong, grind it into powder, and take 2g each time, accompanied by rice wine or boiled water.
Soak Rudi Wugong in children's feces for forty-nine days, wash and dry it, and grind it into powder. Take six parts each time, accompanied by wine or boiled water. ("Guangxi Medicinal Plant Atlas")
3. Dysentery: Take 9g of fresh Rudi Wugong, 20g of fresh Portulaca oleracea, mash and mix with saline water to drink.
