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Key F: woody angiosperms with alternate, compound leaves

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1 Leaves 1-, 2-, or 3-foliolate (leaves with less than 4 leaflets, usually appearing bilobed or trifoliolate)
1 Leaves 4-foliolate or more (leaves with at least 4 leaflets, often many more).
  2 Leaves palmately or palmately-pedately compound
  2 Leaves pinnately, bipinnately, or complexly compound.
    3 Leaves twice pinnately compound, at least in part pinnate-pinnatifid, 2-pinnate, or otherwise more complexly compound than 1-pinnate.
    3 Leaves 1-pinnately compound.
      4 Leaves even-pinnately compound (generally with 2 leaflets at the apex of the rachis, these obviously and symmetrically paired).
      4 Leaves odd-pinnately compound (generally with a single leaflet at the terminus of the rachis, this leaflet sometimes slightly angled).