Can someone identify this tree from the Pacific Northwest?
It looks similar to a Cotinus coggygria, which is a shrub that we call a Smokebush in the UK. But given your location, it could be Cotinus obovatus, known as American smoketree.

See http://dendro.cnre.vt.edu/dendrology/syllabus/factsheet.cfm?ID=415

The leaves will start green and progressively change colour to deep reds in the autumn with sprays of pink-purple flowers in the summer that from a distance look like smoke, hence the name.

Here are some images I have found on the web.


http://www.cirrusimage.com/tree_American_smoke.htm


http://allthedirtongardening.blogspot.co.uk/2012/08/smoke-tree-smoke-bush-coninus.html