Images
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The fruits of boxelder are V-shaped double samaras and are held in clusters
Photo credit: Larry Korhnak, University of Florida

Two petioles meeting at the stem, showing the opposite leaf arrangement
Photo credit: Larry Korhnak, University of Florida

Two compound leaves of boxelder showing the opposite arrangement
Photo credit: Larry Korhnak, University of Florida

Boxelders are often multi-trunked and shrubby at the base
Photo credit: Larry Korhnak, University of Florida