The bark on young branches of Boxelder is smooth, glabrous and silvery blue-green.

The bark on young branches of Boxelder is smooth, glabrous and silvery blue-green.
Photo Credit: 
Emmanuel Douzery
https://commons.wikimedia.org/wiki/File:Acer_negundo_bark-Clapiers~2010_04_05.jpg

Plants in Photo

Acer negundo