Looking at the picture of the plant characteristics, may be wild buckwheat. Wild buckwheat, also known as open gold locks, is the state Ⅱ key protection of wild plants (approved by the State Council on August 4, 1999). Open gold lock is the name of traditional Chinese medicine, the main treatment: sore throat, lung-heat cough, carbuncle phlegm, rheumatism and paralysis, joints and other conditions.