Horseshoe gold (Latin scientific name: horseshoe gold J.R. Forst. &; G. foster ) is a horseshoe-shaped metal plant of convolvulaceae. Perennial creeping grass with slender stems, gray pubescence and roots on nodes; Leaves reniform to round, 4-25mm in diameter, broadly rounded or emarginate at the apex, and broadly heart-shaped at the base; Flowers solitary leaf axils, pedicels shorter than petioles, filiform; Sepals obovate-oblong to spatulate, obtuse, 2-3 mm long, hairy on back and margin.

It is widely distributed in tropical and subtropical regions of both hemispheres. In China, it is distributed in provinces south of the Yangtze River and Taiwan Province Province. Born in grassland, roadside or ditch on hillside at a long altitude of 1300- 1980m.

The whole herb has the functions of clearing away heat and promoting diuresis, expelling wind and relieving pain, stopping bleeding and promoting granulation, diminishing inflammation, detoxicating and killing insects. Can be used for treating acute and chronic hepatitis, icteric hepatitis, cholecystitis, nephritis, urinary tract infection, tonsillitis, stomatitis and carbuncle, snake bite, breast carbuncle, dysentery, malaria, pulmonary hemorrhage, etc.