Bark gray

Edge of leaf has many teeth. There are three main lobes, may have two small ones at the base near the leaf-stem. Red Maple

Edge of leaf has few teeth.

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All Trees
- Tree having broad leaves.
  - Leaves simple.
    - Leaves and branches opposite to each other.
      - Leaves having 3 to 5 lobes.
        
        bark gray.

ostermiller.org (site index)

This key was developed by "bt" in June 1982. It was put into HTML format by Stephen Ostermiller in July 1997. Copies of the entire guide in zip format that may be taken to camp on a laptop are available to those who write.