When going to my spot in Centennial Woods, I had a very difficult time observing one of the trees listed. After walking around the woods around my spot, I was able to find a paper birch. This is my favorite tree and is also very easy to identify.

Birch

Paper Birch trees have very distinctive bark. The bark flakes off and looks like paper. When observing the phenological phase of my tree, I did not observe any evidence of flowering or budding.