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Woody Plants (Secondary Xylem (Growth Rings (Early wood (first wood formed…

- - - - Upright Cells
      - Procumbent Cells
    - - horizontal, rectangular cells with secondary walls
  - - - first wood formed
      - high portion of wide vessels
    - - lower proportion of vessels
    - - early wood and late wood together to form a ring
      - Marks 1 year of growth
    - - species with vessels restricted to early wood
- - - - One cell wide
    - - Two cells wide
    - - Many cells wide
    - - Regular horizontal rows
    - - Irregular horizontal rows
  - - - long, tapered cells; typical length almost 1 cm
      - Anticlinal Walls
        
        longitudinal division perpendicular to the cambium's surface
      - Periclinal Walls
        
        longitudinal division parallel to the circumference of the cambium
    - - short and cudobial cells
      - Periclinal Walls #
      - Mostly storage parenchyma and albuminous cells
      - Grouped together in short vertical rows