Influence of Climate Factors on Wood Cell Structure Variation Analysis of Tracheid Characteristics and Microfibril Angle Among Species and Hybrids of Larix spp. Anatom ical Characteristics of Taxodium‘ zhongshansa 302‘and Taxodium d istichum Wood Wood Anatomy of Thuja sutchuenensis Endemic to China Further Observations on Zosterophllum yunnanicum Hsü Radical variation in growth ring width and tracheid dimensions of Metasequoia glyptostrobides OBSERVATION ON VESSEL MEMBERS IN THE ADVENTITIOUS ROOT OF SAGITTARIA SAGITTIFOLIA L. Apoptosis in the Development of Tracheary Elements in Plants A Study on the Genetic Variation in the Mechanical Properties of Single Tracheids of Japanese Larix STUDIES ON THE WARTY LAYERS OF THE TRACHEIDS OF THE CHINESE GYMNOSPERM OUS WOODS BY ELECTRON MICROSCOPY VARIATION OF WOOD PROPERTIES WITHIN TREES OF CHINESE FIR II.VARIATION OF TRACHEID MORPHOLOGY PRELIMINARY STUDY ON WOOD PROPERTIES VARIATION OF LOBLOLLY PINE VARIATIONS IN TRACHEID FORMAL FEATURES OF PINUS TABULAEFORMIS CARR MECHANICS OF WOOD CELL AND ESTIMATION OF LONGITUDINAL ELASTIC MODULUS OF SOFTWOOD——ESTIMATION OF LONGITUDINAL ELASTIC MODULUS OF SPECIMEN Using Nanoindentation Technique to Determine the Longitudinal Elastic Modulus and Hardness of Tracheids Secondary Wall A Scanning Electron Microscopic Observations of the Leaves in Some Conifers The Probability Distribution and Sampling Simulation of the Tracheid Length in Masson Pine THE FLOW-RESISTOR AND GAS PERMEABILITY OF SOFTWOOD TRACHEID Tracheid Length Variations within and among Trees in Plantation of Masson Pine GEOGRAPHICAL VARIATION AND CORRELATION IN SPECIFIC GRAVITY AND TRACHEID LENGTH OF JUVENILE WOOD OF MASSON PINE New Observations on Drepanophycus spinaeformis from the Lower Devonian of Guizhou, China Structure of Bordered Pit Membrane of Cunninghamia lanceolata Tracheid Estimation of Longitudinal Tensile Strength of Tracheids with Zero-Span Tension Technique MECHANICS OF WOOD CELL AND ESTIMATION OF LONGITUDINAL ELASTIC MODULUS OF SOFTWOODS——THEORY ON THE MICRO-AND MACROSCOPICAL BEHAVIOURS OF SOFTWOOD ELASTICITY Variation of Wood Basic Density and Tracheid Length of Different Provenances of Loblolly and Slash Pines