Pharmacognosy identification of original plants of Tibetan medicine "Dida"

OBJECTIVE To identify two original plants which were used as Tibetan medicineDida systemically in pharmacognosy,and provide the scientific evidence for identification and application.METHODS Two original plants were compared by original plant identification,morphological and histological identification,microscopic indentification,thin layer chromatography(TLC).RESULTS The differences of Swertia mussotii Franch.and Halenia elliptica D.Don were obvious in original plant morphology,microscopic characteristics and TLC.CONCLUSION Two original plants of Tibetan medicine Dida are completely identified by the methods.