Describe of goods: This product was side cylindrical stem, the upper part of multi-branch, surrounded by subfoveal longitudinal groove into a long 30-60cm, diameter0.5cm, surface light yellow-green, hairs closed , the quantity is light, with tenacity , myelinated central section , leaves interaction of herath, a stem , leaves and more kink broken, complete all the lower leaves 3 split , stephanopyxis , gas micro , bitter taste.