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Keys
Vascular plant groups
Club mosses
Ferns
Vegetative key to families
Gymnosperms
Flowering plants
Genera
Families
Berberidaceae
Either, leaves all compound; or reduced to
3-fid
thorns on main branches and
simple
on side branches
Berberidaceae
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reject this alternative
Leaves of the main shoots reduced to spines; leaves of short shoots
simple
Berberis
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Leaves of the main shoots compound, not reduced to spines
Mahonia