Perennial herb, up to 140 cm high. Rhizome cross walk, sturdy, with the majority of fibrous roots. Stem straight, stout, a fine of Prism, with the base often fibrous residue petiole, brown, sometimes with purple. Packing type: Vacuum plastic bags,2.5kg/bags,10kg/carton,20kg/carton, 25kg/carton.