Cloning, prokaryotic expression, and functional identification of β-amyrin synthase cDNA of Psammosilene tunicoides Establishment of induction and culture system for hairy roots of Psammosilene tunicoides Genetic diversity analysis of germplasm resources of Psammosilene tunicoides The Chromosome Number of Psammosilene tunicoides Endemic to China STUDIES ON THE SAPONINS FROM PSAMMOSILENE TUNICOIDES A NEW TRITERPENOID OF PSAMMOSILENE TUNICOIDES A New Tritepenoid saponin from Psammosilene tunicoides Chemical constituents from root of Psammosilene tunicoides Chemical constituents of Psammosilene tunicoides and bacteriostatic activity Two New Triterpenoid Saponins from Psammosilene tunicoides Cyclic Dipeptides from the Root of Psammos ilene tunicoides Study on quality standard of Psammosilene tunicoides based on absorbed active components in rat plasma Three Cyclic Dipeptides from the Root of Psammosilene tunicoides Optimization of extraction procedure of psammosilene tunicoides by uniform design with pharmacodynamic index Chemical constituents from roots of Psammosilene tunicoides