dendrology ‘dendro-’ from the greek word meaning tree ‘-ology’ meaning the study of...
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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
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Conifers vs. DeciduousWhich is Which?
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Characteristics of ConifersNeedle shaped
leavesSeeds that
develop inside cones
Evergreen – green year round
Gymnosperm, conifer, softwood
Examples: pine, spruce, hemlock, fir
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Examples of conifers
Balsam fir Douglas fir
Fraser fir Scotch pine
Red pine
White pine
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Conifer leavesNeedle like Scale like
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Conifer needlesClusters Singles
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Deciduous Tree CharacteristicsBroad flat leavesLose all leaves
each year in the fall
Angiosperm (flowering plants), broadleaf, hardwood
Examples: oak, maple, beech, aspen, ash
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Deciduous examples
Red oak Red maple
Black locustWhitebirch
Crimson king
Honey locust
beech
Elm
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Leaf characteristics-deciduousLeaf 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
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Leaf Arrangement
alternate opposite whorl
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Leaf TypeSimple vs. Compound
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Simple CompoundOnly one leaf bladeJoined by its stalk to
the woody stemExamples: maple,
oak, aspen, beech
Made up of several leaflets
Leaflets are joined to a midrib that is not woody
Examples: ash, walnut, sumac
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Simple or Compound?
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What is the leaf type?
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Leaf EdgeLobed , smooth, toothed?
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Leaf Texture
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Leaf Shape
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Cones
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Leaf Observations
Deciduous Conifer
Leaf arrangement:Alternate, opposite, whorl
Needles or scales
Leaf type:Simple, compound
Needle attachment:Single, clusters
Leaf edge:Entire, lobed, toothed