The Twisted dendrobium (Dendrobium tortile) belongs to Orchidaceae (the Orchid family). It is a perennial herb that is distributed from northeastern India to Burma, Thailand and the Malay Peninsula. It grows in forests at an altitude of around 1200 m and grows on trees and rocks. The corm is spindle-shaped, oblong with 3-4 leathery leaves. After the leaves fall, flower buds are formed, and from late winter to early summer, the peduncles are extended and lilac flowers bloom. The labella are large, and the petals and calyxes are twisted.