Phyllostachys nigra Identity & Plant Part
The botanical entity is Phyllostachys nigra (Lodd. ex Lindl.) Munro, a clump-spreading bamboo of the Poaceae family whose culms turn black with age. The part used is the leaf. Culms, rhizomes, young shoots and the sap or shavings drawn from the stem are not part of this ingredient.
Bamboo materials are easy to mix up in the trade. Bamboo leaf is not lophatherum, the herb sold in Chinese materia medica as dan zhu ye, which comes from a different grass, Lophatherum gracile. And bamboo shoot, bamboo stem shavings and bamboo sap are separate materials with their own composition.
The leaf carries flavone C-glycosides, such as orientin, isoorientin, vitexin and isovitexin, together with phenolic acids, and like other grasses it also deposits silica in its tissues.












