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Dendrology

Dendrology. ‘Dendro-’ from the Greek word meaning tree ‘-ology’ meaning the study of Dendrology is the study of trees and includes taxonomy, identification, silivical characteristics, ranges, morphology, and ecology. Conifers vs. Deciduous Which is Which?. Characteristics of Conifers.

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Dendrology

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  1. Dendrology • ‘Dendro-’ from the Greek word meaning tree • ‘-ology’ meaning the study of • Dendrology is the study of trees and includes taxonomy, identification, silivical characteristics, ranges, morphology, and ecology

  2. Conifers vs. DeciduousWhich is Which?

  3. Characteristics of Conifers • Needle shaped leaves • Seeds that develop inside cones • Evergreen – green year round • Gymnosperm, conifer, softwood • Examples: pine, spruce, hemlock, fir

  4. Examples of conifers Balsam fir Red pine Douglas fir White pine Fraser fir Scotch pine

  5. Conifer leaves • Needle like • Scale like

  6. Conifer needles • Clusters • Singles

  7. Deciduous Tree Characteristics • Broad flat leaves • Lose all leaves each year in the fall • Angiosperm (flowering plants), broadleaf, hardwood • Examples: oak, maple, beech, aspen, ash

  8. Deciduous examples Red oak Elm Honey locust Red maple White birch beech Crimson king Black locust

  9. Leaf characteristics-deciduous • Leaf arrangement: whorl, alternate, opposite • Leaf type: simple or compound • Leaf edge: entire (smooth), lobed (projection), toothed (serrated) • Leaf texture: hairy, waxy, rough, smooth, thick, thin, etc. • Leaf shape: various

  10. Leaf Arrangement alternate opposite whorl

  11. Leaf TypeSimple vs. Compound

  12. Simple Compound • Only one leaf blade • Joined by its stalk to the woody stem • Examples: maple, oak, aspen, beech • Made up of several leaflets • Leaflets are joined to a midrib that is not woody • Examples: ash, walnut, sumac

  13. Simple or Compound?

  14. What is the leaf type?

  15. Leaf EdgeLobed , smooth, toothed?

  16. Leaf Texture

  17. Leaf Shape

  18. Cones

  19. Leaf Observations

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