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Chemical constituents of Aster flaccidus A New Species of Clematis and a New Record of Hemiboea from Guizhou Age structure of Pennisetum flaccidum populations during vegetation restoration in coal ash storage pools of Coal Power Plant in the Kerqin grassland region Studies on chemical constituents from rhizome of Anemone flaccida STUDIES ON THE DROUGHT RESISTANCE OF FOUR SPECIES OF PLANT IN THE STAGE OF SEED GERMINATION AND SEEDLINGS The Karyotypes of Four Species of Apiaceae from Yunnan,China Chemical constituents of Aster flaccidus