Tripterygium is a lichen belonging to the lichen plant division, named for its ear-like shape and growth on wet rock crevices of steep cliffs.It contains high protein and various trace elements, making it a highly nutritious tonic food, a rare and precious mountain delicacy.The stone ear of Huangshan is called"one of the three stones".It is produced in southern, southwestern China, and the Shaanxi south mountains, known as"three stones of Lushan".
