STUDY ON THE GEOGRAPHY OF AQUATIC PLANTS IN NORTHEAST CHINA Diversity of Aquatic Vascular Plants in the Yangtze Delta A Discussion to Methods Used in Studies on Floristic Affinities between Regional Floras in China A Floristic Study of the Seed Plants on Tianshengqiao Scenic and Historic Interest Area in Chongqing City Species composition and classification of natural vegetation in the abandoned lands of the hilly-gullied region of North Shaanxi Province A study on the taxonomy and distribution of Encalyptaceae (Musci) in China Analysis the Floristic Character of Seed Plants in Wuyanling National Nature Reserve from Zhejiang Province Similarity of the Floristic Characteristics of Different Coastal Wetlands in China A study on the fern flora of Shimentai Natural Reserve, Guangdong, China THE CHARACTERISTICS OF PTERIDOPHYTE FLORA FROM GUANGDONG PROVINCE A Floristic Study of the Seed Plants on Huanglong Nature Reserve in Sichuan Province Comparison of Vascular Plant Species Diversities between Hangzhou Xixi and Shaoxing Jinghu National Wetland Park,East China Studies on flora diversity of the seed plants in Heng Mountain nature reseave,Shanxi