This James Lafferty photo contains
ponderosa, ponderosa pine, western yellow pine, bull pine, pinus ponderosa, sitka spruce, picea sitchensis, and douglas fir.
There might also be
mahogany, mahogany tree, birch, birch tree, american white birch, paper birch, paperbark birch, canoe birch, betula cordifolia, and betula papyrifera.