Terms for use with a Dichotomous Key for trees

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Terms for use with a Dichotomous Key for trees
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Coniferous or Deciduous

• Coniferous Tree has needles

• Deciduous Tree has broadleaves

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Opposite or Alternate branching

• Opposite branching

• Alternate branching

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Compound or Simple Leaves

• Simple

• Compound

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Compound Leaves

• Pinnately Compound

• Palmately Compound

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Margins of Simple Leaves

• Entire Serrated Lobed

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Leaf margins

• Entire Toothed Double toothed

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Lobes

• Pinnately Palmately Not lobed

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Leaf Base

• Heart Shaped Uneven heart shaped Not heart
  shaped

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Veins

• Pinnately veined Palmately veined

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Parts of a Leaf

• Stomata- small openings in the leaf that help
  cool the plant through Transpiration 90 of the
  water a plant absorbs is lost through
  transpiration

• Blade- main body of the leaf

Petiole- small stem-like structure which
attaches the blade to the main plant stem
basically an extension of the midrib
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Online Tree Keys

• http//www.arborday.org/trees/whattree/

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