Abstract:This paper deals with the microscopic characteristics of the powder of the roots of Genus Adenophora.Eighteen species and subspecies have been studied.The results show that Sect.Basiphylae and Sect.Pachydiscus can be identified easily based on the amount of sclerified cork cels,and 18 species,subspecies and varieties can beidentified according to the amount,shape and thickness of the wals of the sclerified cork cels,the diameter and pit of thevessels,the number and shape of the secretion of thelaticifers,and the number of inulin crystals.