Tianma (scientific name: Gastrodia elata? Bl.), also known as the red arrow, the only rocking chi, away from the mother, the Hop Lei grass, the God grass, ghost Dupu, Mu Pu, Ming Tianma, Ding Feng grass, white dragon skin, etc., is a perennial herbaceous plant of the orchid family Tianma genus. Rhizome thick, no green leaves, capsule obovate-ellipsoid, often tuber or seed reproduction. Its rhizomes are used to treat dizziness, numbness of the limbs, pediatric convulsions, etc., is a valuable traditional Chinese medicine. It is a valuable traditional Chinese medicine. -Baidu Encyclopedia