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Key to Erodium

Geraniaceae

Erodium

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1 Leaves simple, deeply lobed but not divided
1 Leaves compound, with 3 or more leaflets.
  2 Primary leaflets sessile or nearly so, sometimes connected by blade tissue; blades of the primary leaflets divided nearly or quite to the base; apical pits of mericarp lacking sessile glands
  2 Primary leaflets petiolulate; blades of the primary leaflets divided <0.75× to the base; apical pits of mericarp with sessile glands