Comparison of Pharmacological Effects Between Cultispecies Sichuan Fritillary Bulb (F.wabueasis,F.mellea)and Wild Sichuan Fritillary Bulb(F.unibracteata) Studies on Chemical Constituents of the Plant Fritillaria unibracteata Reproductive organ variation in Fritillaria unibracteata along an altitudinal gradient Studies of Songbeinone, A New Fritillaria Alkaloid Identified from the Bulb of Fritillaria unibracteata Variation of phenology and bulbs of Fritillaria unibracteata along altitudinal gradients Simultaneous Determination on Three Alkaloids in Bulbs of Fritillaria unibracteata var. wabensis by HPLC-ELSD