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WOOD STRUCTURAL FEATURES - Coggle Diagram

- - - - pore
    - - topography
    - - diffuse porous
        
        most hardwoods
      - ring porous
        
        Narra
        
        Pterocaarpus indicus
        
        Mahogany
        
        Swietenia macrophylla
        
        Teak
        
        Tectona grandis
        
        Bagalunga
        
        Melia azedarach
        
        Kalantas
        
        Toona calantas
- - - - bears perforation
- - - - food distribution
  - - - independent from pores
    - - associated w/ pores
- - - - food
      - water
    - - formed by vascular cambium
        
        horizontal rows
  - - - same morphological type
      - all procumbent
        
        horizontal
        
        main axis perpendicular
        
        axis (grain) of
        prosenchymatous elements
        
        radial section view
        
        any of various tissues of higher plants composed of elongated usually pointed cells mostly with little or no protoplasm and including tissues specialized for conduction and support
    - - xylem ray
        
        different morpho types
- - - - tangential section
      - macerated woods
  - - - short, irregularly formed
        
        conspicuous bordered pits
        
        near vessel elements
        
        not form definite axial row
      - Phil. Mahogany Species
    - - specialized cell
        
        hardwoods
        
        similar to latewood vessel elements
        
        imperforate @ ends
      - lateral walls are pitted
        
        have spiral thickenings
  - - - water conduction
      - supporting elements
    - - radial rows
        
        square/polygonal