Oil Extract from Passionflower Seed by Supercritical CO2 and It,s Composition Analysis Communities of Typical Sand Dune-fixed Plants in the Central Part of Otindag Sandy Region Pteridophyte Florae in Dabashan Mountain Quantitative Classification and Ordination of the Florae in the Nuclear Production Region of Zhongwei goats,Ningxia Multivariate Analysis and Environmental Interpretation of the Florae in Malan Forest Region of the Loess Plateau Flora Analysis of the Seed Plants in the Mountainous Region Located in West Xingtai Prefecture, Hebei Province Characteristics of Dalbergia hupeana Florae in the Huangfushan Mountain of Anhui Province STUDY ON CHANGES OF CARBOHYDRATES CONTENT AND ACTIVITIES OF AMYLASE AND SUCRASE IN MORP HOGENESIS OF CULTURED FRITILLARIAE PALLIDIFLORAE STUDY ON CHROMOSOME UNSTABILITY IN TISSUE CULTURE OF FRITILLARIAE PALLIDIFLORAE UNDER DIFFERENT HOMONES Neo-Taraxacum Y. R. Ling & X. D. Sun, Genus novum et Addenda Subfamiliae Liguliflorae, Familiae Compositarum STUDY ON SECONDARYMETABOLITES IN THE TISSUECULTURE OF FRITILLARIA PALLIDIFLORAE SCHRENK