Leaf-Ettes Chorus Line

Liquidambar styraciflua (Sweetgum) to be precise. Beavers love it, as the name hints. Nice arrangement to show off the varied color of the fall leaves. You went a long ways from either Arizona or Oregon. Generally East Texas and Oklahoma is as far West as this grows in the wild.
Later. . .
Oddly enough, this is a much despised invader in a large flatwoods area where pine is king. It is admittedly pretty in the Fall of the year in a cityscape or roadscape, but in my professional life as a forester, it is mostly a nuisance. It has commercial value in the right markets, but it has only nuisance value in the pine woods. In the Piedmont and upper Coastal Plain, where beavers dam streams, it is a beaver food source. The beavers love its taste and the trees they girdle and fell are good dam material. However, it ruins the land for growing pines and other hardwoods for years.

Phil, I don't know about wild ones, but there are many, many cultivated LiquidAmbers in  western gardens. We had several in our yard in Lafayette, Northern CA, and the leaves in this image came from our tree in Oregon. They are highly-prized out here as one of the few trees that turns Vermont-red in the fall. Most yellows here are vine maples. 
Thanks for all the interesting information!  I didn't know it was an invasive species. 
Sandy

A VERY cool presentation, Sandy!  I like seeing the variation in each of the leaves.  This is really nice.

Nathan

Beaiutiful.  Very creative.

Sandy: Nicely conceived and presented. Very well done.>=))>