This document discusses different types of wood, including coniferous wood which is composed of radial files of cells with resin ducts and tracheids. It also discusses ring porous wood which has large earlywood vessels and diffuse porous wood which has small vessels throughout. Examples of different species are provided for each wood type.

1. Wood Types

2. Coniferous Diffuse Porous Ring Porous

3. Conifers: radial files of cells (for most species)
Note: colors are inverted!
This is an x-ray!

5. Conifers: radial files of cells (for most species)

6. Conifers: radial files of cells (for most species)
Resin ducts
Tracheids
Horizontal
rays

7. Conifers: radial files of cells (for most species)

8. Yellow Pines = thick
latewood
Southern Pines Ponderosa Pine Red Pine

9. White Pines = thin latewood
Eastern White Pine Western White Pine Sugar Pine

10. Balsam Fir White Fir Grand Fir

11. Wood Type 1: Conifer Wood

12. Wood Type 1: Conifer Wood

13. Wood Type 1: Conifer Wood

14. Ring porous: large earlywood vessels

16. Ring porous: large earlywood vessels
Vessels
Fibers
Rays

17. Chestnut and Oak
Elm and Hackberry
Sassafras and Black Locust
Hickory and Pecan

19. Oaks rarely have
missing rings but they
can have very
compressed growth.

20. Oak often exhibits an
offset in the rings across
rays.

21. Diffuse porous: small vessels throughout

22. Diffuse porous: small vessels throughout
Vessels
Fibers
Rays

23. Sugar Maple Red Maple Dogwood

24. American Holly Black Cherry Tulip-Poplar