A PRELIMINARY REPORT OF GROUP-PLANTING TRIAL OF CALAMUS TETRADACTYLUS Standardized structure design of tetrad-ecoagricultural pattern in North China Identification of active components of sex pheromone for Sidemia depravata and field trapping Pollen Morphology Observation of 15 Wild Lilies from Four Provinces in Western China Amides from the Fruits of Phellodendron chinense A STUDY ON THE POLLEN MORPHOLOGY OF RHODODENDRON IN NORTHEAST OF CHINA Pollen morphology of Rhododendron subgen. Tsutsusi and its systematic implications Studies on preparation by SPG membrane emulsification method and in vitro characterization of tetradrine-tashionone ⅡA -PLGA composite microspheres MS1516 is Essential for Tetrad Formation and Microspore Development in Arabidopsis thaliana FLORAL ANATOMY OF TETRADOXA 0MEIENSIS Comparison on morphology, biology, and ecology of fruit flies, Bactrocera (Tetradacus) minax (Enderlein), Bactrocera (Bactrocera) dorsalis (Hendel) Bactrocera, and Bactrocera (Zeugodacus) cucurbitae Coquillett Pollen Morphology of Rhododendron Subgenus Azaleastrum Ultrastructural Studies on Megaspore Formation in Ginkgo biloba A Study on Mineral Nutrition for Solution Culture of the Seedlings of Calamus tetradact ylus Pollen Morphology of Four Selected Species in the Annonaceae Some New Taxa of Charophyta from Guangxi Pollen Tetrads in Lilium with a Discussion on the Delimitation Between L.semer vivoideum and Its Ally Pollen Tetrads in Lilium with a Discussion on the Delimitation Between L.semer vivoideum and Its Ally Pollen Morphology of Vaccinium ashei J.M.Reade.(Ericaceae),with Reference to a Measurement Method of Polar Coordinate for Tetrahedral Tetrads Pollen Morphology of Three Selected Species from Annonaceae Diterpenoids from a kind of soft coral Lobophytum sp. Contribution of molecular cladistics to the taxonomy of Rutaceae in China* Two genera of freshwater Dinophyta newly recorded from China Synthesis and Field Tests of Sex Attractant for Holcocerus hippophaecolus (Lepidoptera:Cossidae) Pollen Morphology of Several Species in Catalpa and Its Taxonomic Significance Antidepression constituents from Angelica Sinensis Radix in Xiaoyao Powder