Viola yedoensis is divided into: Viola yedoensis, Viola yedoensis and Viola yedoensis. . Viola yedoensis:: alias June Green Flower Chongqing, Tietoujian Shaanxi. . Location: Jiangsu, Zhejiang, Anhui, Fujian, Henan, Gansu and Yunnan. . Efficacy: clearing away heat and toxic materials, relieving swelling and pain, and treating unknown swelling, carbuncle, toxic sore and furuncle, erysipelas, poisonous snake bite, etc. . Dandelion:: alias:: Huang Huading, the old woman is in Shandong, Hebei and Northeast China. . It is found all over the country. . Efficacy: clearing away heat and toxic materials, relieving swelling and resolving hard mass, inducing diuresis and relieving stranguria, treating sores and swelling, breast carbuncle, red eyes, sore throat, lung carbuncle, intestinal carbuncle, damp-heat jaundice, hot stranguria and astringent pain. .