Abstract:Objective: Commercial samples of Ziwan have been investigated and identified to find out the original species in circulation Method:Comparative histological and morphological identification Result: The main original plant species are Aster tataricus, Ligularia fischeri,L.hodgsonii,L. intermedia,L.wilsoniana, L.sibirica var.araneosa, L.veitchiana and L.caloxantha.Conclusion: The root and rhizome of Atataricus are used as Ziwan in most areas of China; but those of Ligularia species are used as Ziwan(named Shanziwan)in southwest,and part of northwest and northeast areas of China.