Horseshoe gold Also known as Lysimachia christinae, Alternanthera philoxeroides, Wonton Grass, Golden Key, Copper Grass, Horseshoe and Jaundice Grass, it is a horseshoe-shaped metal plant of convolvulaceae. Note that horseshoe gold should not be confused with genuine road yellow (road yellow). It is distributed in the south of the Yangtze River in China (including Taiwan Province Province) and widely distributed in Guizhou, Guangxi, Fujian, Sichuan, Zhejiang, Hunan and other places. It grows in areas with an altitude of 65,438+0,300 meters to 65,438+0,980 meters, mostly on roadsides, hillside grasslands or ditches, and has been artificially introduced and cultivated.