I’m stumped … What is this tree?

I’ve often wondered what this tree is. We are east of The Dalles along I-84 between MP85 and MP104. It is one of the most common trees on the OR side of the highway. Often stunted in growth. Somewhat looks like an ash, but I can’t find any references at all on this tree. Can you help?

I took these 3 pictures on 6/17/12 with my cell phone in 30mph winds, so the quality is pretty bad …



  1. A poll on OBOL found that this tree is the Tree of Heaven (Ailanthus altissima). Having seen the trees with my own eyes, this makes a lot of sense. Thanks everybody for their input! Thanks Greg!


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