Note: Select the link to see a larger photo

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