Chinese Name: Da huang Botanial Name: Rheum Palmatum English Name: Rhubarb [Origin Habitat ]: Si chuan , Gan su [Chemical Composition ]: Rhein , Emodin , Chrysophanol , Aloe- empdoin , Physcion , SennodideA , B , C , D , Rhein-8-β-D-glucoside , Physcion monoglucosode , Emodin mon-oglucoside , Chrysophanol monogluxoside , in addition , there is Tannins , Glucogallin , Catechin , Gallicacid , and ...